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100以内的加法和减法知识点100以内的加法和减法是小学数学的基础知识，对于学生来说是非常重要的。
在学习这些知识点时，学生需要掌握一些基本的计算方法和技巧。
本文将以100以内的加法和减法为主题，介绍一些相关的内容。
一、100以内的加法在100以内的加法中，我们需要掌握两位数与两位数相加的方法。
当两个两位数相加时，我们先将个位数相加，然后将十位数相加，最后将个位数和十位数的结果相加，得到最终的结果。
例如，我们计算56 + 37，首先将个位数6和7相加，得到13，然后将十位数5和3相加，得到8，最后将13和8相加，得到21，所以56 + 37 = 21。
在计算过程中，可以利用进位的概念，将两个两位数的相加转化为两个一位数和一个进位数的相加。
这样可以简化计算的过程，提高计算的速度。
除了两位数与两位数的相加，我们还需要掌握两位数与一位数相加的方法。
当一个两位数与一个一位数相加时，我们先将个位数相加，然后将十位数与一位数相加，得到最终的结果。
例如，我们计算56 + 7，首先将个位数6和7相加，得到13，然后将十位数5与1相加，得到6，最后将13和6相加，得到19，所以56 + 7 = 19。
在计算过程中，我们可以利用进位的概念，将两个一位数的相加转化为一个一位数和一个进位数的相加。
这样可以简化计算的过程，提高计算的速度。
二、100以内的减法在100以内的减法中，我们需要掌握两位数减去两位数的方法。
当一个两位数减去一个两位数时，我们先将个位数相减，然后将十位数相减，得到最终的结果。
例如，我们计算74 - 28，首先将个位数4减去8，由于4小于8，所以我们需要向十位数借1，即将7减去2，得到5，然后将4加上10，得到14，最后将14和5相减，得到9，所以74 - 28 = 9。
在计算过程中，我们需要注意借位的概念，当个位数不够减时，需要向十位数借位。
借位后，需要将十位数减1，并将个位数加上10。
除了两位数减去两位数，我们还需要掌握两位数减去一位数的方法。
100 以内的加法和减法在数学学习的初期，加法和减法是孩子们最早接触的两种运算。
通过加法和减法的练习，孩子们能够培养自己对数学的兴趣，建立起对数的概念和计算能力。
今天，我们就来探讨一下100以内的加法和减法。
首先，我们从加法开始。
加法是一种简单直观的运算，它将两个或多个数进行相加得到一个结果。
在100以内的加法中，我们需要掌握的是从1加到100的运算。
让我们来看一些例子：1 + 1 = 22 +3 = 510 + 5 = 1525 + 30 = 55在运算加法时，我们需要注意两个数的单位位相加，十位数相加并加上进位。
这是加法运算的基本规则，也是我们在计算中依赖的基础。
接下来，我们来谈谈减法。
减法是加法的逆运算，它将一个数从另一个数中减去，得到一个差。
同样地，在100以内的减法中，我们需要掌握的是从1减到100的运算。
当然，减法的难度相比加法要大一些。
因为在减法中，我们需要注意被减数要大于或等于减数，否则就无法进行减法运算。
举个例子：5 - 3 = 210 - 6 = 450 - 20 = 3080 - 80 = 0在减法运算中，我们需要从被减数中减去减数，并得到一个差。
减法运算的结果可以是一个正数、零或负数，这取决于被减数和减数的差值。
通过大量的加法和减法练习，我们能够更加熟练地掌握100以内的数学运算。
这样的训练不仅可以提高我们的计算速度，还能够培养我们的逻辑思维和数学思维能力。
除此之外，在进行加法和减法运算时，我们也需要注意一些技巧和注意事项。
比如，在加法中可以使用进位法，将进位的数单独计算出来，再加到结果中。
而在减法中，如果被减数不够减，我们可以向高位借一位，然后进行减法运算。
总之，100以内的加法和减法是数学学习的基石，也是我们日常生活中经常会用到的运算。
通过反复练习和巩固，我们能够提高计算能力和数学思维，为今后更复杂的数学问题打下坚实的基础。
让我们一起努力，深入理解加法和减法，并善于运用它们解决实际问题！。
100以内的不进位加法练习题一．口算。
26+3= 24+42= 35+22=71+6= 17+31= 22+33=55+10= 62+10= 10+80=21+2+6= 43+12+23= 41+2+10=二．比较大小。
4+45 50 10+30 32+7 43+6 5228+70 100 50+30 61+14 75三．在（）里填上合适的数。
81+（）=97 12+（）=46 （）+25=6624+（）=39 10+（）+29=69 （）+15+31=873 5 （） 6 5+ （）+ 2 5 + 2 25 6 6 8 （）四．判一判1.一个数比36多13，这个数是23.（）2.计算25+34+10是可以先算34+10=44，再算25+44=69.（）3.两位数相加时，个位与个位要对齐。
（）五．解决问题1.学校里举行合唱比赛，一班有35人参加，二班比一班多14人参加，二班有多少人参加比赛？=()2.停车场里有轿车32辆，有面包车15辆，有电动车22辆。
（1）汽车一共有多少辆？= ( )（2）停车场一共有多少辆车？= ( )3.小明做了32朵红花和25朵黄花，小红做了45朵红花和24朵黄花。
（1）小明一共摘了多少朵花？= ( )（2）一共做了多少朵黄花？= ( )100以内的不进位加法答案一．29 66 57 77 48 55 65 72 90 29 78 53 90 45 79 61 44二．< > < < > =三．16 34 41 15 3041 21 43 87四．1.× 2.√ 3.√五．1.35+14=49（人）2.32+15=47（辆）47+22=69（辆）3.32+25=57（朵）25+24=49（朵）。
100以内整十数加减法班级 姓名50 -30 =40 -10 =60 +20 =30 +10 = 60 -40 =80 -50 =30 -10 =10 +10 = 80 +20 =30 -10 =10 +20 =80 +20 = 20 +60 =40 -10 =70 -20 =10 +50 = 80 +20 =40 +50 =40 +60 =30 +20 = 60 +40 =60 +20 =50 -40 =50 -10 = 40 -20 =30 -20 =70 +20 =60 +40 = 50 -20 =70 +10 =20 -10 =60 +20 = 70 -20 =80 -10 =20 +20 =90 +10 = 10 -10 =30 +60 =90 +10 =90 +10 = 40 -40 =80 +20 =50 -20 =40 +60 = 90 -70 =30 +70 =70 -20 =30 -10 = 30 +10 =50 +30 =70 -10 =10 +40 = 80 +10 =10 +10 =40 +40 =90 -20 = 90 -90 =40 -20 =30 +40 =20 -10 = 80 +20 =30 +60 =80 +10 =20 +70 = 40 +50 =10 +40 =90 -60 =90 +10 = 60 +20 =30 +70 =30 -20 =60 -10 = 90 -70 =40 +60 =60 +20 =40 +50 = 10 -10 =80 +20 =20 -10 =80 +10 = 50 -10 =60 -40 =10 +10 =40 +20 = 30 -10 =40 -10 =10 -10 =10 -10 = 30 +60 =40 -30 =90 +10 =20 +10 = 50 -10 =70 -50 =50 -30 =30 +10 = 10 -10 =10 +20 =50 -40 =20 -20 =100以内整十数加减法班级 姓名60 -50 =70 -20 =80 +10 =70 +20 = 50 +10 =30 -30 =60 +30 =60 +20 = 50 +10 =40 +10 =90 +10 =90 +10 = 30 +60 =80 +10 =80 +10 =30 +50 = 70 -40 =50 +10 =90 +10 =70 +10 = 50 +20 =60 -40 =30 -10 =90 +10 = 20 -20 =10 +40 =80 -50 =20 -20 = 30 +50 =30 +70 =90 -80 =70 +30 = 10 +40 =40 +40 =70 -70 =80 -40 = 40 +10 =50 +10 =50 -40 =70 -60 = 70 -40 =30 +10 =60 +10 =30 +40 = 70 +10 =40 -40 =60 -20 =20 +40 = 10 +40 =30 -20 =10 +20 =40 +40 = 10 -10 =10 -10 =50 +30 =50 +40 = 90 +10 =40 +20 =80 -10 =30 +50 = 80 +20 =60 -10 =50 +40 =10 +30 = 90 +10 =20 +10 =60 +10 =20 +30 = 20 -10 =70 +20 =30 +50 =10 +20 = 20 -10 =50 -50 =40 +30 =50 -40 = 80 -70 =20 -20 =80 +20 =20 -10 = 40 +10 =90 +10 =70 +20 =10 +10 = 60 +10 =10 -10 =60 +40 =60 -30 = 80 +20 =90 +10 =90 +10 =90 +10 = 80 +20 =40 -40 =90 -20 =30 -20 = 60 -60 =70 -30 =60 -10 =70 +10 = 80 -70 =80 +10 =60 +20 =40 +50 =100以内整十数加减法班级 姓名40 -10 =90 +10 =20 -20 =60 +30 = 90 +10 =30 +30 =60 -30 =40 +30 = 30 +40 =70 -20 =40 +30 =50 +50 = 70 +30 =90 +10 =10 +80 =60 -30 = 40 -30 =50 -10 =70 -20 =60 -50 = 10 -10 =80 -10 =30 +20 =20 +50 = 10 +50 =50 +30 =90 -20 =90 +10 = 10 -10 =50 -30 =40 -20 =30 +60 = 60 +10 =20 -10 =90 -60 =30 +30 = 50 +10 =70 +30 =80 -10 =90 +10 = 60 -60 =60 +20 =10 -10 =30 -30 = 10 +80 =70 -60 =60 -30 =90 +10 = 30 +60 =20 -20 =20 -10 =80 -60 = 40 -20 =80 +20 =80 +20 =60 -10 = 30 +40 =30 -20 =30 -20 =80 +10 = 40 -40 =40 +10 =30 +20 =40 +20 = 30 +10 =70 +20 =60 -10 =90 -40 = 30 -20 =20 -20 =40 -20 =20 -20 = 70 -50 =10 -10 =30 +40 =40 -30 = 80 -70 =40 +30 =70 -70 =50 +20 = 40 +60 =20 -10 =80 +20 =70 +10 = 10 +90 =90 -40 =20 -10 =40 +40 = 30 +50 =90 +10 =90 -10 =10 +10 = 70 -30 =60 +30 =60 -10 =50 +30 = 30 +50 =90 +10 =90 +10 =70 +20 = 40 +30 =90 -80 =60 -50 =70 +20 =100以内整十数加减法班级 姓名10 +10 =90 +10 =60 -60 =50 +10 = 70 +10 =40 +20 =10 +50 =20 +10 = 10 +90 =60 -30 =20 +50 =20 +10 = 40 -30 =30 -10 =90 +10 =60 -60 = 70 +30 =60 -20 =10 +60 =60 +40 = 10 +30 =60 -40 =50 -50 =60 +40 = 40 +40 =10 +20 =70 +20 =10 +80 = 40 -10 =30 -30 =60 +40 =50 -30 = 50 +50 =30 +40 =70 +30 =70 +20 = 50 -20 =30 +20 =30 +70 =90 -10 = 90 -10 =80 -20 =30 +40 =30 +50 = 60 +40 =80 +20 =70 +20 =90 +10 = 50 -10 =70 -60 =30 +20 =70 -50 = 90 +10 =30 +40 =10 -10 =10 +70 = 20 +80 =90 -30 =20 +80 =40 -20 = 60 +30 =20 +40 =10 -10 =90 +10 = 30 +60 =30 -20 =10 -10 =40 -40 = 50 -50 =80 -30 =80 -70 =40 -40 = 80 +20 =60 +10 =30 -20 =60 +20 = 80 -70 =40 +50 =50 +50 =80 -70 = 70 -50 =70 +20 =80 -50 =40 -40 = 70 +30 =30 -20 =80 +10 =30 -30 = 70 +20 =40 +30 =20 -20 =30 -10 = 90 +10 =50 +30 =40 +20 =50 +20 = 60 -40 =80 +20 =10 +70 =50 -40 = 10 -10 =10 -10 =30 +10 =40 -40 =100以内整十数加减法班级 姓名80 -60 =60 -10 =10 -10 =20 -10 = 20 -10 =30 -30 =10 +40 =30 -10 = 40 +20 =80 +20 =10 -10 =50 +40 = 90 +10 =70 +20 =90 -10 =90 -60 = 50 +20 =50 -40 =60 -30 =50 -20 = 60 -20 =70 -30 =60 -10 =90 +10 = 80 +10 =50 +40 =70 +20 =10 +60 = 80 +10 =80 +10 =60 +30 =30 -30 = 10 -10 =30 +30 =40 +30 =50 +50 = 30 +40 =70 -40 =20 +70 =30 +30 = 30 +70 =80 -40 =40 -20 =80 +20 = 10 +30 =10 +60 =10 +20 =40 +30 = 10 -10 =20 -20 =60 +20 =70 +10 = 40 -20 =10 -10 =10 +70 =10 -10 = 50 -30 =40 +10 =40 +30 =70 +20 = 90 +10 =10 -10 =30 +30 =30 -30 = 10 -10 =80 +20 =30 -30 =80 +20 = 40 -40 =30 -10 =60 +20 =30 -30 = 80 +20 =30 -10 =60 +20 =90 +10 = 50 -20 =90 +10 =10 -10 =40 -10 = 70 -50 =50 -50 =90 +10 =80 +20 = 20 +20 =80 +20 =20 -10 =50 +40 = 20 +80 =10 +30 =70 -60 =80 -80 = 10 -10 =50 -10 =90 +10 =40 +40 = 50 -10 =20 +70 =60 -60 =80 -80 = 10 -10 =90 +10 =80 -80 =80 -30 =100以内整十数加减法班级 姓名20 +60 =20 +10 =60 -60 =50 -30 = 20 -10 =80 -70 =70 +20 =30 +60 = 30 -20 =50 -40 =60 +30 =70 -60 = 30 -20 =80 -30 =40 +60 =70 -40 = 60 +30 =40 +20 =20 +40 =20 +80 = 40 -10 =90 -20 =10 -10 =60 +10 = 30 -20 =10 -10 =30 +60 =70 -40 = 10 +90 =50 +30 =80 +20 =90 -10 = 60 +10 =60 +20 =30 -20 =70 -50 = 80 +10 =80 -50 =30 +10 =80 +20 = 90 -90 =40 -20 =60 +20 =80 +20 = 10 +80 =80 +20 =50 -10 =20 -10 = 60 -30 =80 -80 =50 +20 =80 -10 = 60 +20 =20 +30 =40 +60 =80 -20 = 70 +30 =70 +10 =20 -20 =20 +40 = 40 +30 =80 +20 =50 +40 =30 +20 = 60 -10 =70 +20 =40 -30 =60 +30 = 80 +20 =40 -30 =40 -40 =40 +10 = 60 -20 =70 -60 =80 +10 =90 +10 = 90 -60 =80 +10 =40 +30 =90 +10 = 80 +10 =50 -40 =90 -80 =20 +60 = 50 -30 =80 +10 =30 +70 =40 -10 = 90 +10 =50 -20 =20 -20 =60 -20 = 10 +70 =70 +30 =80 +20 =40 -30 = 60 +20 =60 +20 =10 -10 =50 +40 = 10 -10 =10 +10 =10 +10 =10 +60 =100以内整十数加减法班级 姓名10 -10 =80 -60 =90 +10 =80 -30 = 30 +60 =10 -10 =70 -10 =30 +10 = 70 -50 =60 -20 =90 +10 =60 +20 = 70 -50 =70 +20 =20 -20 =90 -70 = 20 -20 =10 +30 =60 +10 =20 -20 = 40 +60 =70 +30 =10 +30 =30 +40 = 40 -20 =30 +70 =90 +10 =60 +20 = 90 +10 =20 -20 =50 +30 =10 -10 = 90 -60 =20 -10 =30 -10 =50 -20 = 30 +10 =80 -10 =10 +10 =20 +70 = 30 +30 =60 +10 =50 +10 =50 +10 = 90 +10 =50 +10 =10 -10 =60 +10 = 70 -60 =90 -20 =90 +10 =40 +40 = 10 +90 =50 +10 =10 -10 =30 -30 = 10 +70 =40 -10 =60 -50 =40 +40 = 70 -40 =30 -10 =60 +10 =90 +10 = 30 +10 =10 +10 =10 +50 =60 +20 = 90 -40 =10 -10 =90 -40 =10 -10 = 30 +70 =30 +20 =10 +10 =20 +40 = 90 -80 =20 +70 =80 -70 =90 +10 = 30 -20 =20 -20 =50 -40 =40 +40 = 30 -20 =40 -10 =30 -10 =10 -10 = 30 +60 =20 -20 =80 +20 =80 +20 = 40 -10 =40 +40 =40 +40 =40 -40 = 80 -50 =60 +10 =80 -20 =70 -70 = 80 +10 =90 -90 =70 -60 =70 +30 =100以内整十数加减法班级 姓名60 -10 =20 +30 =40 +60 =20 +50 = 20 +70 =30 -30 =30 -20 =30 +10 = 60 +30 =10 +20 =40 +30 =60 +40 = 90 -10 =50 +20 =40 +50 =10 +40 = 50 +10 =30 +40 =70 +30 =90 -60 = 40 +60 =90 -20 =40 +40 =90 -70 = 90 -10 =90 +10 =10 -10 =20 -10 = 60 +40 =50 +10 =90 +10 =90 +10 = 90 -40 =80 +20 =20 +70 =20 +20 = 70 -20 =60 +30 =50 +40 =40 -30 = 10 -10 =20 +40 =70 +30 =60 +30 = 90 +10 =70 +30 =10 -10 =50 -10 = 40 +20 =50 +30 =50 +50 =50 -20 = 70 -30 =70 -30 =80 +10 =90 +10 = 70 +30 =70 -40 =90 +10 =10 -10 = 30 -20 =60 -30 =30 -20 =60 +20 = 60 +10 =90 -70 =90 -40 =60 +40 = 30 +10 =10 +20 =70 +30 =30 +30 = 90 -40 =60 +30 =80 -10 =30 -20 = 80 +20 =10 -10 =50 -20 =70 +10 = 40 -10 =20 -10 =70 +20 =40 +50 = 80 -30 =50 +40 =80 +10 =60 +10 = 80 -20 =50 -40 =50 -10 =80 +20 = 40 -20 =70 +20 =80 +20 =50 +20 = 90 -70 =80 -40 =40 +10 =20 +80 = 10 +80 =70 -60 =90 +10 =60 +20 =100以内整十数加减法班级 姓名30 -10 =10 +10 =90 -50 =30 +50 = 60 -50 =20 +30 =40 -20 =10 -10 = 60 +40 =40 +50 =80 -40 =30 -30 = 90 -60 =80 -10 =60 +30 =30 -10 = 70 -20 =40 +60 =80 +10 =90 +10 = 80 +10 =90 +10 =40 +60 =80 -10 = 40 -10 =30 -30 =30 -20 =40 -30 = 80 +10 =50 +20 =50 -50 =80 -50 = 40 +50 =90 -70 =80 +20 =10 -10 = 90 +10 =50 -40 =60 -50 =60 +40 = 40 -20 =40 +50 =10 +80 =20 -20 = 80 +10 =50 -10 =60 -40 =30 +50 = 20 +60 =70 -70 =60 +20 =20 -20 = 10 -10 =10 -10 =60 +10 =40 +20 = 50 +40 =20 -10 =40 -40 =60 -10 = 70 -50 =10 +60 =60 +10 =90 -60 = 80 -60 =80 +10 =10 +40 =40 +50 = 20 +20 =50 -30 =30 -30 =20 -10 = 80 +10 =70 +10 =40 -30 =60 +20 = 70 +30 =20 -20 =20 -20 =40 -20 = 70 +30 =50 -20 =20 -10 =40 -30 = 60 +20 =80 +20 =30 -20 =70 -70 = 30 -20 =60 -50 =10 +60 =60 +30 = 70 +10 =50 +30 =40 +30 =30 -10 = 70 -10 =40 -10 =70 -20 =60 -20 = 80 -70 =40 +60 =60 +40 =90 +10 =100以内整十数加减法班级 姓名90 -30 =60 +30 =80 +10 =90 +10 = 70 -30 =90 +10 =20 +30 =40 +10 = 40 -20 =60 -10 =20 +70 =50 +10 = 80 +10 =20 +60 =40 -10 =40 +50 = 90 -90 =20 -20 =50 +50 =50 +40 = 60 -30 =10 +30 =60 -50 =20 +60 = 40 -30 =10 +20 =20 -10 =40 +50 = 80 +20 =10 -10 =90 +10 =30 +40 = 70 -70 =30 +70 =10 +60 =70 +30 = 90 +10 =40 +40 =30 +60 =40 -30 = 70 +20 =40 -30 =40 -30 =60 -50 = 90 +10 =80 -80 =20 +70 =20 -10 = 10 +80 =80 -50 =80 -80 =90 +10 = 10 +20 =60 -20 =40 +40 =30 +20 = 10 -10 =40 +30 =70 +30 =60 +10 = 90 +10 =40 -20 =60 -20 =10 +40 = 60 +10 =80 +20 =30 +20 =70 +10 = 80 +10 =80 -70 =40 -20 =10 -10 = 50 -30 =80 +10 =40 -20 =90 +10 = 40 +40 =90 -50 =10 +50 =10 +60 = 60 -60 =10 +50 =70 +10 =90 +10 = 70 -20 =80 +10 =30 +10 =10 +40 = 60 -10 =40 -30 =10 -10 =40 +30 = 60 +30 =30 +10 =70 +20 =10 +70 = 20 -10 =20 +70 =90 +10 =30 +30 = 60 +40 =10 -10 =30 +60 =10 +90 =100以内整十数加减法班级 姓名40 +60 =20 +30 =90 +10 =30 -20 = 20 -20 =40 -30 =40 -40 =70 +10 = 30 +60 =90 -40 =60 -40 =40 -20 = 40 +60 =70 +10 =20 +40 =30 +60 = 80 +20 =60 +30 =90 -10 =60 -40 = 80 +20 =40 +20 =70 +10 =10 +40 = 20 +30 =30 +20 =10 -10 =60 +10 = 90 -30 =50 -30 =10 +30 =80 -40 = 10 -10 =10 +40 =20 +40 =40 +60 = 60 +40 =20 +40 =30 +10 =60 +20 = 70 -20 =60 +10 =40 +20 =20 -20 = 30 +30 =90 +10 =10 +60 =70 -30 = 70 -10 =80 -80 =90 +10 =70 -10 = 50 +30 =90 +10 =20 +10 =70 -20 = 50 +20 =90 -60 =70 -10 =40 -30 = 20 +80 =50 +50 =40 +30 =70 -40 = 20 +10 =30 +40 =70 -60 =30 -30 = 40 -30 =90 +10 =40 +60 =50 +20 = 10 +50 =50 -50 =20 +10 =50 -50 = 20 -10 =80 -20 =20 -10 =40 -20 = 90 +10 =20 +60 =70 -70 =10 -10 = 90 +10 =60 +30 =50 +10 =90 +10 = 80 -60 =90 -50 =90 -20 =60 +10 = 60 +30 =90 +10 =20 +40 =70 -30 = 60 +10 =50 +30 =80 +10 =30 -30 = 90 -10 =40 -10 =70 -70 =30 -30 =100以内整十数加减法班级 姓名80 +10 =50 -30 =50 +30 =20 +10 = 20 -10 =30 -10 =50 -20 =90 +10 = 50 +40 =40 -40 =60 +10 =80 -60 = 20 +40 =50 +40 =60 -20 =80 -10 = 40 +50 =40 +60 =80 +10 =10 -10 = 30 +20 =80 +20 =10 -10 =70 +30 = 50 -30 =40 -40 =10 +10 =80 -10 = 40 -20 =80 +10 =80 +20 =40 +10 = 40 +10 =30 +40 =30 +20 =80 -70 = 10 +90 =50 +50 =90 +10 =30 +60 = 60 +20 =60 +10 =90 -50 =30 +10 = 80 +20 =40 +60 =70 +20 =50 -50 = 70 -40 =60 -10 =10 +80 =10 -10 = 20 -10 =40 -30 =60 -30 =90 +10 = 60 -30 =50 +20 =60 +20 =60 +30 = 70 +30 =30 +70 =80 -20 =30 -10 = 90 -50 =30 -10 =10 +10 =40 -40 = 60 +10 =60 -60 =50 +30 =30 -10 = 70 +10 =20 -10 =20 -10 =70 -10 = 50 -10 =30 -10 =90 -70 =20 -10 = 70 +20 =30 +40 =50 -10 =60 +20 = 60 -60 =90 +10 =70 +10 =60 -10 = 40 +20 =60 +40 =40 -30 =70 -20 = 10 +70 =70 -30 =40 +10 =90 -20 = 70 +30 =20 +20 =50 +10 =70 -50 = 40 +50 =70 +30 =30 -20 =80 -70 =100以内整十数加减法班级 姓名20 -10 =80 +20 =40 +20 =60 -10 = 80 -40 =10 +60 =40 -10 =60 +10 = 30 -30 =80 +20 =70 -30 =90 +10 = 40 -10 =10 -10 =90 +10 =40 -10 = 10 +50 =50 -50 =30 +30 =50 -30 = 50 -10 =30 +10 =10 +50 =70 -10 = 50 +40 =50 +20 =20 -20 =90 +10 = 90 -70 =70 +20 =60 +30 =80 -50 = 20 -20 =20 -20 =70 +20 =30 +40 = 20 +30 =70 -10 =90 +10 =60 -20 = 50 +40 =20 -20 =70 -30 =90 +10 = 80 +20 =50 +50 =90 -60 =20 -20 = 90 +10 =60 +20 =80 -80 =90 +10 = 50 +10 =50 -20 =60 +30 =60 -30 = 80 +10 =30 -10 =10 +30 =80 +20 = 10 -10 =10 -10 =80 -50 =70 -40 = 10 +40 =40 +30 =50 +10 =90 +10 = 60 -60 =90 -80 =70 +30 =30 +60 = 10 -10 =20 -20 =80 -60 =50 +50 = 30 -30 =40 +10 =70 -20 =60 +40 = 40 +50 =30 +70 =20 +70 =80 +20 = 80 +10 =50 +40 =40 -10 =40 -30 = 70 -50 =10 +60 =50 -20 =20 +20 = 60 +40 =70 -40 =60 +20 =60 +10 = 20 +60 =10 -10 =60 +40 =70 -20 = 30 -20 =90 -20 =90 +10 =10 +20 =100以内整十数加减法班级 姓名10 +80 =80 -70 =60 -10 =80 +10 = 40 +40 =90 +10 =30 -10 =80 +10 = 30 +40 =10 +70 =70 +10 =20 +40 = 80 -30 =50 -40 =90 -90 =10 +40 = 10 -10 =70 +20 =80 +20 =50 +50 = 70 +10 =60 +10 =50 +20 =40 +30 = 70 +30 =80 -20 =70 +10 =50 -30 = 60 +30 =10 +90 =30 -20 =20 +80 = 30 -30 =10 +80 =60 -10 =40 +60 = 90 +10 =80 +20 =80 +20 =30 +10 = 20 +10 =10 +60 =60 -10 =10 +90 = 80 +20 =60 -20 =20 +30 =40 +40 = 40 -30 =60 -30 =50 +20 =50 +10 = 10 +40 =30 -10 =30 +40 =40 -10 = 60 -20 =50 +10 =20 -10 =70 +20 = 50 -10 =10 +40 =60 -60 =90 +10 = 70 -60 =60 -40 =70 +30 =60 +40 = 20 +30 =20 +20 =60 -50 =70 +30 = 60 +40 =30 +50 =80 -40 =10 +80 = 90 -40 =40 -30 =90 +10 =50 +10 = 70 +30 =70 +10 =60 +20 =20 -10 = 50 -10 =50 +20 =80 +10 =60 +10 = 50 -30 =90 +10 =40 +30 =20 -10 = 30 +50 =90 -30 =40 +20 =70 -40 = 10 +20 =80 -50 =40 +60 =20 +30 = 90 +10 =50 +50 =20 +70 =30 +40 =100以内整十数加减法班级 姓名70 -30 =10 +30 =40 -10 =60 +30 = 50 -50 =20 +70 =30 +50 =70 -30 = 10 -10 =10 -10 =40 +10 =10 -10 = 60 -60 =60 -30 =20 +10 =40 +40 = 70 +20 =80 -50 =70 +10 =40 +60 = 10 +20 =80 +10 =90 +10 =30 +50 = 30 +20 =70 -60 =10 +20 =10 +10 = 80 +20 =10 -10 =20 +30 =50 +20 = 20 +20 =80 -10 =20 +80 =10 -10 = 50 +20 =40 -20 =30 -30 =50 -30 = 90 -40 =80 +10 =30 +70 =90 -50 = 80 +10 =80 -40 =50 -10 =20 +70 = 40 +30 =60 -60 =30 -10 =50 -50 = 40 +50 =50 +40 =80 +10 =40 +20 = 30 +70 =70 -60 =40 +40 =60 -20 = 20 -20 =10 -10 =60 +10 =10 +10 = 20 +60 =60 -30 =50 +10 =40 -10 = 60 +20 =80 +20 =90 -60 =60 +20 = 30 +70 =60 -40 =80 +20 =50 +30 = 10 -10 =50 +50 =30 +10 =30 +50 = 60 -60 =10 +60 =80 +20 =50 -20 = 20 -20 =40 +50 =80 -70 =60 +10 = 80 -60 =80 +20 =80 +20 =70 +30 = 80 +10 =70 -60 =10 +30 =90 +10 = 70 +10 =40 +50 =30 -10 =10 -10 = 90 -40 =60 +30 =40 +30 =40 +10 =100以内整十数加减法班级 姓名90 +10 =40 -30 =70 -10 =40 -10 = 10 +20 =10 +30 =50 +30 =60 +10 = 70 +20 =40 +60 =10 +90 =60 -50 = 50 +30 =20 +60 =20 -20 =30 +60 = 70 -20 =90 +10 =30 +30 =20 +70 = 70 +30 =80 +10 =80 -70 =10 -10 = 90 +10 =80 +20 =30 -20 =90 +10 = 10 +30 =20 +40 =60 -60 =20 +80 = 80 +20 =60 +20 =20 +40 =20 +60 = 30 +30 =50 +40 =30 +40 =10 -10 = 10 +20 =70 +20 =60 -10 =80 +20 = 70 -40 =90 -80 =80 +10 =50 -20 = 60 -50 =50 -30 =10 -10 =10 +10 = 10 +20 =50 -50 =50 +30 =90 +10 = 20 +50 =30 -10 =30 -20 =80 +20 = 80 +20 =20 -10 =40 -10 =30 -20 = 70 +20 =50 -40 =60 +10 =20 -10 = 40 +10 =90 -40 =30 +10 =60 +40 = 90 +10 =50 +50 =40 +10 =10 +70 = 70 -50 =70 +10 =10 +70 =70 +10 = 90 -20 =40 +20 =40 +10 =90 -10 = 20 -20 =70 +10 =30 -20 =90 -50 = 40 +50 =40 +60 =70 +20 =80 +20 = 50 -20 =20 +70 =50 +20 =40 -10 = 70 -70 =20 +60 =20 -20 =40 +10 = 40 +30 =30 +50 =90 +10 =80 +10 =100以内整十数加减法班级 姓名40 -10 =60 +20 =20 -20 =40 +60 = 10 +70 =40 +50 =60 -40 =20 +40 = 70 -70 =90 +10 =90 +10 =10 -10 = 80 +20 =50 +40 =30 -10 =70 -60 = 20 -20 =40 -10 =80 +20 =90 -80 = 30 -30 =60 -40 =40 +10 =20 -20 = 20 +10 =40 +30 =70 +10 =90 -40 = 40 +50 =90 +10 =70 +20 =90 -90 = 40 -20 =40 +10 =30 +70 =10 -10 = 60 -40 =40 +60 =90 +10 =30 -20 = 80 -30 =70 +20 =30 +30 =30 -20 = 70 -10 =80 +20 =80 -80 =20 -10 = 90 +10 =20 +40 =30 -30 =70 -70 = 30 +30 =30 -30 =40 -30 =30 +60 = 10 -10 =30 -10 =40 -20 =30 -20 = 90 +10 =40 +60 =80 -60 =20 +70 = 10 +20 =60 -40 =60 -40 =60 -50 = 70 -70 =20 -10 =10 +50 =50 +50 = 20 +20 =90 -70 =80 +20 =70 -60 = 60 -20 =50 +20 =90 +10 =60 +20 = 40 +40 =90 +10 =70 -70 =30 -30 = 60 +40 =30 +50 =20 +80 =20 -20 = 20 +60 =90 -30 =80 -10 =80 -50 = 40 -30 =20 -10 =40 -20 =70 +20 = 20 -10 =10 +80 =30 -20 =10 -10 = 70 -20 =10 -10 =30 -10 =10 +40 =100以内整十数加减法班级 姓名90 +10 =20 +70 =80 +10 =60 +10 = 70 +10 =20 +10 =80 +10 =40 -30 = 10 +60 =80 +20 =70 +20 =60 -50 = 20 +30 =30 -20 =20 +60 =60 -40 = 90 +10 =60 +40 =90 +10 =80 -60 = 50 -50 =10 -10 =90 +10 =40 +10 = 60 -60 =10 -10 =50 +20 =60 +20 = 60 +10 =60 -50 =40 -20 =90 -80 = 90 -50 =90 +10 =40 +60 =20 +40 = 10 -10 =30 -30 =80 +20 =80 -60 = 50 +40 =20 -20 =40 +60 =50 -40 = 80 +10 =60 +10 =30 +40 =50 +40 = 90 -40 =90 -10 =40 -40 =10 +80 = 30 +30 =10 +70 =10 -10 =70 -60 = 50 -20 =50 +30 =80 +20 =70 -70 = 50 -30 =40 +40 =20 +50 =90 +10 = 20 -20 =50 -20 =30 +10 =60 -20 = 60 +10 =80 -20 =10 -10 =70 -20 = 90 +10 =90 +10 =90 +10 =70 -20 = 20 -10 =40 +60 =70 -40 =40 +40 = 90 -30 =80 -80 =80 +10 =80 -40 = 90 +10 =50 +20 =10 -10 =40 -40 = 50 -20 =90 +10 =40 -30 =90 -70 = 40 +40 =40 +50 =80 -70 =10 -10 = 10 -10 =80 -50 =50 -40 =90 +10 = 10 +40 =70 +30 =20 -10 =90 +10 =100以内整十数加减法班级 姓名70 -40 =10 +10 =70 -40 =30 -10 = 10 +30 =60 -30 =10 +20 =30 +30 = 90 -10 =90 -90 =70 -70 =80 -50 = 30 -20 =60 +40 =40 -10 =70 -60 = 70 -70 =10 -10 =60 +20 =20 -10 = 60 +20 =90 -90 =50 +30 =60 +30 = 30 -10 =30 +60 =80 -30 =10 +80 = 10 -10 =20 -20 =10 +10 =50 +30 = 50 +40 =60 -40 =80 +20 =80 -30 = 10 -10 =40 +40 =10 +80 =50 -10 = 90 -40 =50 -20 =90 +10 =90 +10 = 60 -10 =40 +40 =50 +20 =10 -10 = 70 +20 =60 +10 =30 +10 =60 +30 = 90 -20 =20 -10 =80 +20 =10 -10 = 30 +20 =40 -20 =90 -50 =50 +20 = 30 +40 =80 +10 =20 +30 =60 -60 = 70 +20 =30 +50 =30 -20 =20 -10 = 10 -10 =30 +40 =60 +40 =80 +10 = 80 -30 =20 +80 =40 -40 =30 -30 = 20 +20 =50 -20 =50 -50 =20 +60 = 40 -40 =40 -40 =80 +20 =30 -10 = 40 +40 =20 +70 =80 +10 =30 +10 = 20 +30 =30 +30 =80 -30 =90 +10 = 20 -10 =10 +30 =60 +30 =60 -50 = 30 -20 =10 +20 =70 +30 =60 +40 = 30 +40 =90 +10 =40 +40 =20 +60 =100以内整十数加减法班级 姓名80 +20 =70 -50 =50 -40 =30 -20 = 80 -30 =50 -20 =70 +20 =80 +20 = 90 +10 =90 -90 =80 +10 =10 -10 = 40 +10 =70 +20 =50 +50 =60 -40 = 70 +30 =50 +20 =20 +10 =10 -10 = 90 -30 =90 +10 =50 +40 =90 +10 = 50 -10 =50 +50 =80 +20 =80 -40 = 80 -30 =10 +80 =70 +30 =40 -40 = 90 +10 =60 +20 =50 +20 =40 -10 = 80 +20 =50 -10 =60 +30 =30 -30 = 10 -10 =90 +10 =50 +30 =90 +10 = 70 +30 =70 +20 =60 -40 =90 +10 = 20 -10 =40 +40 =20 +30 =20 -10 = 20 +80 =90 -50 =50 -40 =50 -30 = 90 +10 =30 -10 =30 -10 =30 -30 = 10 +70 =10 -10 =30 -20 =70 +20 = 30 -20 =90 +10 =30 +10 =40 -20 = 60 -10 =10 +60 =80 +20 =70 -30 = 30 +10 =90 -90 =10 -10 =40 +20 = 90 +10 =90 +10 =50 -50 =20 -10 = 40 -30 =90 -10 =10 +40 =10 +10 = 90 +10 =10 -10 =80 +10 =50 -50 = 60 -40 =90 +10 =50 +30 =70 -20 = 30 -10 =20 +80 =10 -10 =80 +20 = 40 -30 =70 -60 =90 +10 =60 +40 = 30 +20 =60 +10 =40 +30 =90 -50 =。
100以内数的加减法计算本文将介绍100以内数的加减法计算方法，帮助读者更好地理解和掌握这些基础运算。
通过清晰的文字和示例，本文旨在帮助读者提高计算能力，并加深对数学运算的理解。
一、加法计算加法是数学中最基本的运算之一，我们可以使用以下步骤进行100以内数的加法计算：1. 确定加法的两个加数，将它们对齐。
2. 从个位开始逐位相加，若相加超过9，则将进位的十位加到下一位上。
3. 将所有位数相加，得到最终的和。
示例1：23 + 34 = 57解析：首先，对齐加法的两个加数：23+ 34-----然后，从个位数开始相加：3 + 4 = 7最后，十位数相加：2 + 3 = 5因此，23 + 34 = 57示例2：56 + 47 = 103解析：首先，对齐加法的两个加数：56+ 47-----然后，从个位数开始相加：6 + 7 = 13，这里我们需要进位。
将进位的十位加到下一位上：5 + 4 + 1 = 10最后，百位数相加：1 + 1 = 2因此，56 + 47 = 103二、减法计算减法也是数学中常见的运算，以下是100以内数的减法计算方法：1. 确定减法的被减数和减数，将它们对齐。
2. 逐位相减，若被减数小于减数，则向高位借位。
3. 将所有位数相减，得到最终的差。
示例1：45 - 18 = 27解析：首先，对齐减法的被减数和减数：45- 18-----然后，从个位数开始相减：5 - 8，这里我们需要借位。
向高位借位：4(10 - 8) = 2最后，高位相减：3 - 1 = 2因此，45 - 18 = 27示例2：66 - 29 = 37解析：首先，对齐减法的被减数和减数：66- 29-----然后，从个位数开始相减：6 - 9，这里我们需要借位。
向高位借位：5(15 - 9) = 5最后，高位相减：5 - 2 = 3因此，66 - 29 = 37综上所述，本文介绍了100以内数的加减法计算方法。
通过理解和掌握这些基础运算，读者可以提高计算能力，并在更高级的数学问题中应用这些技巧。
《100以内数的加法（不进位加）》说课稿
今天我说课的内容是《100以内的加法和减法不进位加》，它是新课标实验教材人教版第三册第二单元。
本单元是本学期的重点单元之一。
我总的教学设想是以现代教学理论为指导，引导学生开展观察、猜想、操作、讨论、交流、归纳、分析等活动进行探索和实现问题的解决。
我认为本单元的教学重点是让学生发现、理解和应用100以内加减法的竖式计算方法，难点是竖式中的进位加法和退位减法。
我根据新课程标准要求从学生的生活经验和已有知识背景出发，已“问题情景——操作探索——合作与交流——解释与应用”为基本模式安排教学。
教学中，以学生动手实践、自主探索与合作交流的学习方法为主，来突出教学的重点，以老师引导为辅，让学生以研究者的身份全面、全程参与到教学的每一个环节，充分调动学生学习的积极性，培养学生实践操作的能力、自主探索的能力、与他人合作交流的能力以及运用数学知识解决实际问题的能力，来突破教学的难点。
下面以本单元第一小节“两位数加两位数”的第一课时“不进位加”进行教学设计：
教学内容：教材第11页例1、例2，练习二第1题。
教学目标：1、通过实际操作、自主探究、合作交流、小组协作等手段帮助学生发现、理解、掌握两位数加两位数的竖式计算方法2、培养学生思考问题和解决问题的能力。
教学重点：探究100以内的不进位加的笔算
教学难点：两位数加一位数、两位数的竖式计算
教具准备：多媒体课件、题卡、学生自备学习小棒
教学流程：
一、创设情境，大胆猜想
现代教学理论倡导数学教学应从学生已有的知识出发，使学生在认识、使用和学习数学知识的过程中，初步体验数学知识间的联系。
在学习新知识时，有必要找准与旧知结构类似的地方，进行同化或顺应，重新建构。
因此，本节课我首先，采用多媒体课件展示出教材上的“参观博物馆”的主体图，把学生的注意力引入课堂，学生通过对主题图的观察，从主题图中获取信息和发现图中的问题“一班的学生和老师一共有多少人？”学生根据从图中获取的信息（每个班前面都有的人数）中研究并猜想出解决方案。
学生会根据已有的认知基础，提出用加法，提出两种解决方案，对于学生提出的方案，我会及时地肯定和赞扬，提高学生学习数学的积极性。
这样设计本环节，把学生将要掌握的新知识与他们的生活实际紧密地结合在一起，通过多媒体手段、大胆猜想等形式，既创设了理想的教学情境，又充分调动了学生学习的积极性，可谓是一个良好的开端。
二、自主学习、获取新知
自主学习、合作交流是现代基础教育改革的亮点之一，学生只有参与到实际的实践活动当中，才能真正理解数学的知识、思想和方法，获得丰富的直接经验，这也是新课标强调联系学生实践的主旨所在。
因此，我就引导大家：“我们一起来检验一下我们刚才的猜想是否正确，好不好？”“一班的学生和老师一共有多少人?应该怎样列式？”学生能很快列出加法算式：35+2，我就紧接着问：“这个算式，你会用什么方法进行计算呢？请大家各自动手用自己喜欢的方法算一算。
”
学生就会采用过去的数小棒或列竖式的方法计算，根据学生的完成度，选择有代表性的方法及时让学生汇报、交流，可能有一根一根地数，也可能一捆一捆地数，还有列竖式的等。
我再问：“那么哪种方法又快又准确呢？”学生会感觉数小棒较慢一些，“那么列竖式是怎样列的，要注意哪些，又怎样计算的呢？”结合以前l零散加零散的方法，引导出数位要对齐。
这样让学生通过自己归纳出列竖式计算的方法，再加以板书，突破了教学的难点。
因为课堂上，教师的必要引导是十分重要的，有引导，学生的探究活动才不至于盲目，有引导学生的探究活动才更有意义。
在学生生动而丰富的操作中，运用“转化”的思想，学生通过用自己的眼睛去观察，用自己的双手去操作，用自己的耳朵去倾听，用自己的心灵去感悟，这一切不仅仅是列竖式计算的过程这一知识的需要，而且也是探究型学习方式的需要。
自主学习例2.
三、时间运用，发展能力
由于前两个流程已用去20分钟左右的时间，为了保证将学生的注意力集中到课堂，我将例题下面的“做一做”用题卡呈现给学生，并将学生分成三人小组，在小组间进行竞赛，并相互说一说你是怎样计算的。
让学生间相互分享各自的学习成果，达到自我教育，相互学习的目的。
同时在轻松愉快的活动中运用了计算知识，还可以提高学生计算能力和培养学生自主学习的能力。
四、独立思考，巩固新制
让学生运用本节课所学知识独立完成练习二第1.2.3题。
这样可以培养学生独立思考能力和良好的学习习惯，同时也可以检验本课时教学目标的达成度。
在这个过程中，知识得以应用，方法得以提炼，凸现了练习的深度，也培养了学生的“学数学、用数学”的能力。
