+ = | 1÷10%= | 0.5×20%= | 16÷ = | 12×30%= |
×3.5= | × = | 9.5+5%= | 2- = | 10×25%= |
+ = , | 1÷10%=10, | 0.5×20%=0.1, | 16÷ =80, | 12×30%=3.6, |
×3.5=0.5, | × = , | 9.5+5%=9.55, | 2- =1 , | 10×25%=2.5. |
,10,0.1,80,3.6,0.5,
,9.55,1
,2.5.分析:算式中有百分数的,先把百分数化成小数,再计算;其它题目根据运算法则直接求解.
点评:一个算式中有不同数的形式,先看化成哪种数的形式计算比较简便,再由此求解.
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