个,每个优惠1元。 单价:5-1=4(元) 4×5=20(元)
方案二:不优惠 单价5元,4×5=20(元) 两种买法花的总钱数相同,买的数量却不同, 所以李老师应该买5个。
2.一场篮球赛分为上半场和下半场。
42-24=18(分)
38-18=20(分)
上半场二(2)班得了多少分?
答:上半场二(2) 班得了20分。
• 17、一个人如果不到最高峰,他就没有片刻的安宁,他也就不会感到生命的恬静和光荣。2020/6/92020/6/92020/6/92020/6/9
谢谢观看
• 13、志不立,天下无可成之事。2020/6/92020/6/92020/6/92020/6/96/9/2020
• 14、Thank you very much for taking me with you on that splendid outing to London. It was the first time that I had seen the Tower or any of the other famous sights. If I'd gone alone, I couldn't have seen nearly as much, because I wouldn't have known my way about.
R·二年级下册
练习课
一、计算巩固,回顾解题步骤
计算。 35+14÷7=37 8×(45-38)=56 6×5+3=33
3+5×9 =48 (22+18)÷8=5 60-15-35=10
解决问题的步骤是怎样的?
1.审题; 2.分析信息; 3.解决问题; 4.回顾反思。