








4.3《 练习七》课件+课时练(含答案)
展开4.3 练习七
1.把下面算式按得数从小到大排一排。
80-20 90-10 60+10 30+60 80-50 80-40
2.看图写算式。
(1)篮球比足球贵多少钱?
=(元)
(2)买一个篮球和一个足球,一共多少钱?
=(元)
3. 学校原来有50盆花。同学们又搬来20盆,现在有多少盆花?
+=(盆)
参考答案
1. 80-50<80-40<80-20<60+10<90-10<30+60
2. (1)50-30=20 (2)50+30=80
3. 50+20=70
