小学数学100以内不进位加整十数练习试题(3)

人教版小学数学一年级下册第六单元100以内加法和减法（一）人教版小学数学一年级下册第六单元100以内的加法和减法（一）姓名:________ 班级:________ 成绩:________ 小朋友，带上你一段时间的学习成果，一起来做个自我检测吧，相信你一定是最棒的! 一、整十数加、减整十数(共5题；共22分) 1. （2分）在（）里填上“”“”或“=”。

86-40 (_______) 86-4 87+10 (_______) 10+87 2. （8分）45＋5=_______ 56＋4=_______ 89＋1=_______ 37＋3=_______ 53＋7=_______ 67＋3=_______ 55＋5=_______ 73＋7=_______ 3. （5分）我比爷爷小多少岁？4. （2分）列式计算。

（1）一共有多少只小动物？_______ （2）瓢虫比蜗牛多多少只？_______ 5. （5分）20与70的和是多少？二、两位数加一位数(不进位)、整十数(1) (共4题；共20分) 6. （5分）送信到正确的地方。

7. （5分）树林里有30只灰鹊，灰鹊比麻雀少18只。

麻雀有多少只？8. （5分）小兔子拔萝卜，白兔拔了24根萝卜，灰兔拔了25根萝卜，一共拔了多少萝卜？9. （5分）姐姐有5张邮票，我比姐姐少2张，我们两个一共有邮票多少张？三、两位数加一位数(不进位)、整十数(2) (共4题；共17分) 10. （1分）46+23=_______ 11. （2分）在横线上填上＞、＜或=．（1）51－5_______40＋6 （2）32－8_______33－4 12. （4分）认真想，仔细填。

（1）30加上它上面的数，再减去它下面的数得_______。

（2）26减去它左面的数，再加上它右面的数得_______。

（3）左面竖行中最大的数是_______，右面竖行中最小的数是_______。

13. （10分）观察下列图形生长规律（1）用语言描述这几幅图的变化规律．（2）请填下表通过上述填表，你能发现它们之间有什么特殊关系？四、两位数加一位数(进位)(1) (共4题；共19分) 14. （4分）动脑筋，看谁聪明。

25+4= 64+2= 27+2= 54+4= 53+3= 7+21=
41+5= 22+7= 85+3= 56+3= 22+6= 3+46=
45+4= 66+2= 23+4= 75+4= 43+6= 7+12=
23+3= 93+6= 72+5= 32+7= 42+6= 4+34=
33+3= 63+5= 33+4= 65+3= 21+4= 3+42=
1＋13= 4＋10= 7＋8= 7＋6= 9＋8=
18－6= 14＋3= 1＋16= 4＋4= 12－5=
16－1= 12－3= 11＋2= 11－3= 6＋3=
7＋10= 6＋5= 13＋4= 6＋10= 15＋4=
10－2= 5＋5= 13－5= 9＋8= 9＋10=
6＋8= 15＋4= 10＋10= 5＋8= 13－5=
7＋5= 3＋5= 16＋4= 4＋6= 6＋5=
6＋3= 14－5= 6＋1= 7＋13= 13＋4=
19－6= 13＋2= 15＋1= 16－4= 10－2=
2＋14= 18－4= 5＋3= 11－1= 2＋18=
20－3= 19－4= 8＋8= 14＋5= 5＋3=
19－8= 7＋11= 1＋19= 19－2=4＋8=
20－1= 14＋2= 3＋16= 18－7= 20－11=
12－5= 5＋13= 5＋6= 6＋13= 5＋11=
14－1= 4＋5= 4＋3= 8＋12= 5＋8=

26 + 20 = 20 + 1 = 50 + 36 = 80 + 6 = 60 + 10 = 2 + 85 = 50 + 4 = 24 + 3 = 14 + 2 = 56 + 20 = 20 + 72 = 84 + 3 = 10 + 20 = 40 + 60 = 2 + 84 = 44 + 20 = 37 + 10 = 1 + 24 = 50 + 18 = 3 + 23 = 22 + 40 = 33 + 2 = 60 + 30 = 1 + 41 = 53 + 30 = 21 + 30 = 80 + 15 = 79 + 20 = 40 + 14 = 96 + 1 = 12 + 3 = 33 + 30 = 32 + 1 = 35 + 20 = 28 + 60 = 14 + 5 = 4 + 10 = 40 + 43 = 10 + 40 = 50 + 39 = 4 + 81 = 43 + 3 = 50 + 30 =65 + 30 =61 + 8 =练习范围： 月 日 姓名: 两位数加一位数和整十数(不进位)题数： 100 分 秒 成绩:6 + 22 =60 + 14 =66 + 10 = 15 + 30 = 6 + 91 = 2 + 26 = 5 + 90 = 3 + 53 =79 + 10 = 18 + 40 =60 + 4 =58 + 10 = 14 + 40 =42 + 6 =20 + 78 = 84 + 4 =20 + 47 =10 + 65 = 30 + 51 = 1 + 42 =70 + 18 = 4 + 71 =10 + 78 =12 + 70 = 24 + 1 = 5 + 32 = 1 + 35 = 70 + 23 =71 + 2 =50 + 40 = 80 + 14 =50 + 13 =77 + 2 = 2 + 97 =60 + 1 = 4 + 32 = 52 + 2 = 1 + 52 =20 + 62 = 2 + 14 =69 + 20 =53 + 10 = 21 + 2 =30 + 62 =30 + 19 = 1 + 56 =73 + 1 =47 + 10 = 77 + 1 = 4 + 74 =70 + 11 =5 + 54 =74 + 5 = 49 + 20 =30 + 45 =1 + 42 = 2 + 93 = 30 + 62 = 6 + 91 = 50 + 35 = 30 + 45 = 50 +4 = 30 + 41 = 3 + 50 = 40 + 50 = 13 + 2 = 20 + 34 = 32 + 6 = 4 + 15 = 71 + 10 = 50 + 36 = 42 + 40 = 43 + 3 = 40 + 43 = 20 + 50 = 79 + 10 = 6 + 72 = 41 + 6 = 10 + 69 = 10 + 15 = 70 + 11 = 24 + 20 = 19 + 30 = 76 + 20 = 17 + 50 = 47 + 20 = 30 + 35 = 6 + 30 = 50 + 49 = 30 + 11 = 17 + 70 = 58 + 40 = 14 + 2 = 60 + 28 = 8 + 90 = 60 + 17 = 19 + 60 = 80 + 15 =33 + 6 =2 + 26 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100姓名:成绩:月 日分 秒28 + 60 =35 + 20 =13 + 80 = 30 + 51 =10 + 78 =21 + 30 = 19 + 20 =16 + 50 = 1 + 24 = 30 + 15 =20 + 80 =49 + 40 = 86 + 10 =44 + 2 =11 + 80 = 20 + 78 = 2 + 82 =20 + 39 = 41 + 8 =64 + 2 = 1 + 13 = 30 + 27 =44 + 20 = 5 + 32 = 37 + 10 =73 + 4 =7 + 21 = 2 + 46 =10 + 37 =21 + 5 = 47 + 10 = 1 + 41 = 3 + 53 = 92 + 7 =10 + 24 = 3 + 54 = 32 + 2 =29 + 40 =30 + 33 = 20 + 20 =30 + 17 =51 + 2 = 30 + 30 =10 + 65 = 2 + 85 = 70 + 18 = 2 + 37 =53 + 30 = 40 + 14 =28 + 1 =70 + 23 =10 + 88 = 5 + 24 = 92 + 5 =47 + 30 =10 + 30 = 71 + 2 = 28 + 60 = 3 + 50 = 1 + 46 = 2 + 14 = 58 + 10 = 10 + 43 = 1 + 17 = 77 + 2 = 16 + 70 = 30 + 45 = 30 + 7 = 20 + 54 = 4 + 15 = 30 + 19 = 12 + 50 = 3 + 53 = 4 + 82 = 2 + 35 = 47 + 10 = 52 + 6 = 60 + 17 = 1 + 42 = 5 + 54 = 10 + 67 = 70 + 20 = 10 + 65 = 60 + 22 = 3 + 94 = 58 + 40 = 50 + 36 = 56 + 20 = 6 + 90 = 5 + 41 = 2 + 26 = 30 + 51 = 8 + 61 = 1 + 41 = 71 + 10 = 40 + 52 = 3 + 73 = 84 + 1 =40 + 37 =6 + 71 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100姓名:成绩:月 日分 秒70 + 23 =20 + 78 =40 + 42 = 40 + 41 =50 + 40 =30 + 57 = 7 + 62 = 2 + 61 =40 + 30 = 14 + 80 =92 + 7 =50 + 42 = 23 + 4 =24 + 1 =80 + 6 = 80 + 15 = 6 + 91 =30 + 17 = 34 + 60 =30 + 60 =20 + 21 = 50 + 4 =30 + 30 = 3 + 82 = 83 + 6 =7 + 91 = 3 + 55 = 52 + 2 = 4 + 64 =37 + 10 = 5 + 42 =41 + 6 =30 + 33 = 30 + 69 = 2 + 85 = 1 + 13 = 44 + 20 =7 + 61 =70 + 26 = 14 + 30 =30 + 41 =90 + 10 = 32 + 1 =33 + 6 =50 + 21 = 20 + 75 =22 + 70 =60 + 14 = 49 + 20 =30 + 16 =61 + 7 =2 + 96 =60 + 10 = 20 + 50 =7 + 32 =1 + 47 = 32 + 20 = 30 + 40 = 50 + 24 = 54 +3 = 53 + 10 = 50 + 40 = 3 + 66 = 30 + 33 = 6 + 73 = 20 + 41 = 30 + 19 = 46 + 50 = 60 + 28 = 50 + 37 = 86 + 10 = 1 + 42 = 20 + 31 = 45 + 2 = 20 + 53 = 94 +5 = 43 + 3 = 30 + 51 = 49 + 20 = 41 + 8 = 27 + 20 = 54 + 20 = 30 + 62 = 58 + 40 = 3 + 53 = 17 + 1 = 71 + 2 = 34 + 60 = 65 + 2 = 69 + 20 = 19 + 10 = 40 + 49 = 4 + 81 = 11 + 8 = 13 + 5 = 2 + 26 = 10 + 22 = 20 + 78 =5 + 54 =77 + 2 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100姓名:成绩:月 日分 秒2 + 87 =40 + 46 =15 + 20 = 57 + 1 =10 + 2 =83 + 2 = 53 + 30 = 2 + 42 =44 + 20 = 30 + 36 =45 + 20 = 2 + 50 = 2 + 60 =18 + 40 =20 + 20 = 8 + 80 =62 + 20 = 2 + 82 = 58 + 10 =10 + 30 = 3 + 23 = 30 + 32 =7 + 32 =30 + 41 =6 + 91 =61 +7 =42 + 30 = 32 + 1 =10 + 40 =61 + 3 = 20 + 55 =20 + 80 =50 + 36 = 50 + 38 =8 + 61 =60 + 10 = 11 + 2 =37 + 10 =88 + 10 = 2 + 72 = 5 + 61 =40 + 43 = 24 + 30 =50 + 28 =60 + 14 = 7 + 50 = 1 + 41 =41 + 10 = 10 + 65 =53 + 3 =91 + 6 =30 + 11 =40 + 58 = 23 + 30 =50 + 46 =20 + 60 = 1 + 93 = 19 + 30 = 2 + 22 = 25 + 40 = 70 + 2 = 2 + 26 = 13 + 50 = 7 + 32 = 24 + 30 = 1 + 42 = 5 + 41 = 86 + 10 = 58 + 10 = 4 + 33 = 20 + 20 = 28 + 30 = 4 + 93 = 30 + 10 = 50 + 39 = 29 + 60 = 14 + 5 = 73 + 1 = 28 + 60 = 20 + 76 = 10 + 83 = 4 + 15 = 20 + 6 = 10 + 78 = 40 + 43 = 16 + 50 = 70 + 21 = 6 + 62 = 60 + 14 = 2 + 77 = 22 + 40 = 92 + 7 = 20 + 31 = 2 + 85 = 35 + 50 = 60 + 35 = 24 + 1 = 80 + 10 =35 + 1 =10 + 13 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100姓名:成绩:月 日分 秒49 + 20 = 5 + 31 =11 + 2 = 2 + 76 =41 + 6 =10 + 34 = 84 + 2 =23 + 10 =20 + 50 = 20 + 41 =77 + 2 =28 + 20 = 91 + 2 =52 + 2 =44 + 20 = 71 + 10 =58 + 40 = 2 + 11 = 55 + 4 =61 + 7 =32 + 2 = 2 + 93 = 3 + 34 = 2 + 82 = 20 + 53 =53 + 10 =10 + 17 = 53 + 30 =18 + 50 =22 + 70 = 20 + 63 =50 + 42 = 3 + 94 = 5 + 54 =50 + 6 = 2 + 34 = 7 + 72 = 2 + 30 =70 + 6 = 30 + 11 =10 + 87 = 1 + 24 = 40 + 14 =8 + 41 = 3 + 55 = 47 + 10 =79 + 10 = 3 + 50 = 8 + 50 =46 + 10 = 1 + 41 =50 + 40 =20 + 78 = 5 + 52 =1 + 94 =3 + 53 = 32 + 40 = 50 +4 = 33 + 2 = 30 + 33 = 50 + 36 = 19 + 30 = 1 + 58 = 2 + 82 = 39 + 40 = 58 + 10 = 79 + 10 = 6 + 71 = 20 + 21 = 33 + 30 = 10 + 78 = 3 + 23 = 35 + 20 = 26 + 30 = 20 + 53 = 42 + 6 = 14 + 5 = 74 + 2 = 40 + 15 = 9 + 80 = 83 + 3 = 24 + 3 = 3 + 54 = 11 + 30 = 15 + 60 = 21 + 70 = 20 + 68 = 71 + 3 = 1 + 13 = 20 + 30 = 60 + 32 = 44 + 2 = 61 + 10 = 10 + 2 = 47 + 20 = 70 + 13 = 31 + 20 = 5 + 41 =60 + 19 =28 + 60 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100成绩:分 秒21 + 6 =72 + 7 =77 + 2 = 8 + 50 =21 + 60 =32 + 5 = 1 + 45 =25 + 3 = 3 + 41 = 53 + 10 =10 + 65 =69 + 30 = 34 + 60 =10 + 80 =10 + 30 = 4 + 81 =40 + 18 =30 + 32 = 4 + 15 = 2 + 26 = 1 + 72 = 92 + 7 =50 + 39 =16 + 10 = 3 + 50 =20 + 20 = 5 + 11 = 2 + 85 =80 + 8 =14 + 2 = 14 + 40 =70 + 6 =70 + 1 = 2 + 81 =24 + 30 =46 + 2 = 6 + 91 =20 + 12 =41 + 8 = 30 + 30 =10 + 34 = 1 + 24 = 20 + 41 =21 + 30 =10 + 87 = 37 + 10 =50 + 42 =60 + 14 =47 + 10 =30 + 17 = 33 + 50 =71 + 10 =10 + 78 = 18 + 50 = 10 + 87 = 92 + 1 = 70 + 11 = 15 + 60 = 4 + 93 = 6 + 12 = 50 + 21 = 6 + 91 = 4 + 73 = 40 + 43 = 50 + 39 = 20 + 41 = 5 + 41 = 80 + 10 = 30 + 41 = 1 + 41 = 27 + 1 = 58 + 40 = 24 + 3 = 21 + 7 = 20 + 80 = 50 + 22 = 73 + 4 = 4 + 15 = 60 + 6 = 30 + 20 = 50 + 4 = 30 + 19 = 41 + 8 = 12 + 70 = 5 + 22 = 47 + 20 = 50 + 18 = 30 + 5 = 92 + 6 = 3 + 64 = 46 + 20 = 57 + 2 = 34 + 2 = 60 + 37 = 24 + 1 =4 + 54 =60 + 14 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100成绩:分 秒40 + 20 = 3 + 24 =37 + 10 = 14 + 2 =10 + 48 =92 + 7 = 36 + 10 = 3 + 53 = 5 + 71 = 32 + 2 =18 + 80 =19 + 10 = 86 + 10 =50 + 37 =70 + 5 = 70 + 23 =10 + 84 =22 + 6 = 90 + 1 = 2 + 85 =7 + 32 = 51 + 5 =10 + 30 =33 + 6 = 20 + 21 = 1 + 61 =30 + 33 = 33 + 4 =40 + 14 = 2 + 96 = 10 + 34 =10 + 20 =50 + 17 = 61 + 6 =71 + 2 =70 + 25 = 60 + 29 =50 + 42 =37 + 50 = 10 + 1 = 1 + 27 =33 + 30 = 35 + 20 = 3 + 90 =36 + 40 = 77 + 2 = 3 + 94 =20 + 78 =2 + 14 = 5 + 54 = 91 + 6 =50 + 40 =20 + 40 = 13 + 2 = 70 + 23 = 11 + 6 = 40 + 8 = 71 + 2 = 50 + 40 = 60 + 29 = 52 + 2 = 61 + 7 = 22 + 1 = 4 + 81 = 30 + 57 = 5 + 11 = 6 + 60 = 37 + 10 = 10 + 30 = 1 + 96 = 30 + 19 = 20 + 20 = 30 + 70 = 40 + 43 = 27 + 40 = 5 + 74 = 10 + 87 = 24 + 30 = 2 + 26 = 20 + 50 = 36 + 10 = 3 + 85 = 5 + 41 = 1 + 24 = 12 + 20 = 1 + 41 = 19 + 10 = 2 + 82 = 32 + 10 = 2 + 85 = 2 + 75 = 40 + 23 = 46 + 20 = 20 + 44 = 88 + 10 =10 + 1 =97 + 1 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100成绩:分 秒1 + 13 =19 + 30 = 5 + 54 = 11 +2 =3 + 50 =35 + 30 = 20 + 78 =23 +4 =42 + 6 = 2 + 72 =79 + 10 =30 + 17 = 50 + 39 =30 + 33 =21 + 3 = 73 + 4 =52 + 7 = 1 + 97 = 4 + 72 =53 + 30 =8 + 21 = 14 + 2 =22 + 20 =30 + 45 = 24 + 3 =8 + 40 =50 + 21 = 17 + 70 =24 + 1 =30 + 10 = 20 + 41 = 3 + 94 =50 + 41 = 50 + 16 =44 + 20 =40 + 9 = 4 + 22 =93 + 2 =10 + 53 = 2 + 93 = 4 + 63 =50 + 42 = 92 +7 =80 + 14 =32 + 1 = 10 + 26 =41 +8 =10 + 63 =34 + 60 =7 + 32 = 23 + 30 =21 + 30 =57 + 30 = 70 + 18 = 36 + 50 = 20 + 54 = 8 + 50 = 44 + 20 = 25 + 10 = 2 + 26 = 6 + 93 = 2 + 16 = 22 + 40 = 20 + 40 = 29 + 10 = 43 + 3 = 3 + 94 = 41 + 6 = 5 + 84 = 50 + 43 = 30 + 45 = 80 + 20 = 9 + 70 = 10 + 30 = 3 + 53 = 20 + 32 = 33 + 2 = 30 + 33 = 10 + 65 = 10 + 19 = 49 + 20 = 9 + 90 = 43 + 30 = 15 + 2 = 11 + 2 = 14 + 5 = 30 + 19 = 3 + 50 = 40 + 36 = 10 + 2 = 30 + 15 = 63 + 20 = 30 + 8 = 80 + 15 = 58 + 40 =43 + 20 =71 + 2 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100成绩:分 秒30 + 62 =50 + 30 =88 + 10 = 10 + 78 =50 + 36 = 1 + 42 = 20 + 53 =14 + 50 =70 + 6 = 52 + 3 =50 + 39 = 1 + 48 = 7 + 71 =22 + 10 =86 + 10 = 50 + 40 =53 + 30 = 2 + 93 = 34 + 60 =31 + 60 =56 + 40 = 42 + 7 =8 + 71 =30 + 58 = 12 + 70 =19 + 50 =43 + 4 = 29 + 60 =84 + 1 =53 + 2 = 65 + 4 =50 + 42 =19 + 20 = 35 + 20 =20 + 41 =10 + 87 = 50 + 21 =21 + 30 =47 + 10 = 20 + 20 =32 + 1 = 4 + 81 = 20 + 21 =30 + 51 =7 + 31 = 56 + 2 =70 + 23 = 1 + 24 =52 + 2 =28 + 60 = 2 + 85 =2 + 82 =50 + 15 = 19 + 80 = 58 + 10 = 10 + 87 = 52 + 2 = 88 + 1 = 71 + 10 = 50 + 39 = 1 + 96 = 5 + 41 = 40 + 44 = 61 + 2 = 50 + 42 = 22 + 30 = 77 + 2 = 60 + 14 = 1 + 64 = 10 + 18 = 50 + 50 = 21 + 30 = 2 + 82 = 23 + 5 = 10 + 78 = 11 + 2 = 1 + 13 = 1 + 42 = 54 + 20 = 2 + 97 = 20 + 21 = 92 + 7 = 17 + 50 = 1 + 38 = 41 + 20 = 8 + 50 = 4 + 85 = 1 + 41 = 25 + 70 = 6 + 91 = 21 + 20 = 30 + 69 = 32 + 20 = 92 + 3 = 73 + 4 =30 + 48 =3 + 50 =练习范围：两位数加一位数和整 十数(不进位) 题数： 100成绩:分 秒32 + 1 =23 + 6 =10 + 19 = 92 + 1 = 2 + 93 =10 + 65 = 53 + 10 =79 + 10 = 3 + 94 = 30 + 19 =79 + 20 =44 + 20 = 72 + 1 = 3 + 72 =41 + 6 = 49 + 30 =70 + 27 =71 + 2 = 20 + 30 =42 + 5 =20 + 32 = 80 + 15 =58 + 1 =50 + 33 = 26 + 60 =49 + 20 =74 + 3 = 50 + 31 =60 + 40 =7 + 52 = 2 + 26 =17 + 1 = 3 + 53 = 70 + 11 =30 + 51 = 2 + 64 = 37 + 10 =30 + 11 = 5 + 13 = 6 + 20 =40 + 9 = 2 + 96 = 30 + 62 =20 + 37 =30 + 41 = 30 + 17 =17 + 80 =50 + 40 =80 + 12 =64 + 30 = 4 + 15 =2 + 14 =92 + 7 = 24 + 1 = 26 + 3 = 60 + 14 = 37 + 10 = 2 + 82 = 6 + 91 = 10 + 5 = 35 + 20 = 1 + 13 = 48 + 20 = 5 + 14 = 30 + 51 = 1 + 23 = 91 + 6 = 30 + 41 = 71 + 10 = 11 + 8 = 6 + 33 = 19 + 40 = 34 + 60 = 20 + 50 = 37 + 40 = 50 + 18 = 4 + 21 = 20 + 38 = 30 + 59 = 30 + 30 = 5 + 41 = 20 + 32 = 7 + 32 = 50 + 4 = 6 + 12 = 70 + 6 = 39 + 30 = 32 + 2 = 73 + 4 = 37 + 50 = 1 + 33 = 1 + 24 = 31 + 2 = 80 + 8 = 4 + 63 =30 + 12 =82 + 2 =1练习范围：两位数加一位数和整 十数(不进位) 题数： 100姓名:成绩:月 日分 秒45 + 10 =77 + 2 = 2 + 20 = 53 + 5 = 5 + 74 =93 + 1 = 8 + 81 =20 + 41 =8 + 50 = 70 + 11 =95 + 4 = 4 + 15 = 1 + 41 =10 + 56 =34 + 4 = 44 + 50 =50 + 27 =24 + 3 = 8 + 80 =10 + 78 =10 + 65 = 32 + 1 =49 + 20 =30 + 5 = 90 + 6 =50 + 36 =88 + 10 = 36 + 20 = 1 + 66 =40 + 43 = 30 + 66 =50 + 42 =58 + 10 = 6 + 60 = 3 + 23 =45 + 20 = 12 + 70 =10 + 80 =47 + 10 = 61 + 7 =28 + 10 =41 + 6 = 42 + 6 =11 + 2 =80 + 18 = 3 + 94 =32 + 40 = 4 + 61 = 11 + 50 =54 + 20 =70 + 18 =60 + 25 =10 + 87 = 5 + 61 =11 + 4 =2。

13、清洁的自来水被用来洗脸、刷牙、洗衣、拖地后就成了污水。64+20=73+4=6+31=58+20=
85+3=20+67=45+ቤተ መጻሕፍቲ ባይዱ0=4+72=
5+23=50+23=43+5=43+50=
2.比较大小
4、日常生活中我们应该如何减少垃圾的数量？44+5○4+45 70○51+20
48○42+7 80+19○100
第一单元微小世界
23、我国是世界上公认的火箭的发源地，早在距今1700多年前的三国时代的古籍上就出现了“火箭”的名称。
5、同学们植树，上午植了40棵，下午植了36棵，一共植了多少棵树？
预计未来20年，全球人均供水量还将减少1/3。3.小猫吃了6条鱼,还剩下32条。原来一共有多少条鱼？
11、在淡水资源短缺的情况下，水污染更给人类和其他生物造成了威胁。绝大多数的水污染都是由人类的活动引起的。
1、月球是地球的卫星，月球围绕着地球运动，运动的方向是逆时针方向。
二、问答题：第一单元微小世界4.一年级有25个男生，20个女生，其中30人7岁了。一年级一共有多少个学生？
可编辑范本两位数加一位数整十数不进位计算642073463158208532067453047252350234354350比较大小445445705120484278019100小猫吃了6条鱼还剩下32条
两位数加一位数、整十数（不进位）
答：烧饭时米变成了饭；写字时纸上留下了字迹；下雨后路上的积水慢慢地变成水蒸气消失在空中；岩石风化变成沙子等。1.计算