7 8 0+9-3
78
8 4+3-7
8
4+4+1
口算 8-3+2= 7 7-3+3= 7
1+7-5= 3 10-4+1= 7
6+2-8= 0 8+1-7= 2
不计算,找出得数比8小的算式。
4+4=8 2+6=8 9-1=8
4+3√ 2+4√ 9-3√
5+4 2+7 9-0
总结:
通过对本节课的学习,同学们能够 熟练计算加减混合算式了吗?
•
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学习目标:
通过练习,使同学们能够正确地计 算加减混合算式,并能够熟练进行计算。
1234 5678
2 3 4 5+4-1 5678
234 5678
3 4 6-3+2 5678
34 5678
4 5+3+2 5678
4 5678
7+3-10
5678
5678
6 7 8 10-9& 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.