直接写出得数.
0÷ = | + = | × = | 10× = |
1÷ = | ÷ = | 3÷ = | - = |
7 = | + = | 4×25%= | 1-8.5%= |
解:
0÷ =0, | + =1, | × = , | 10× =4, |
1÷ = , | ÷ = , | 3÷ =5, | - = , |
7 = , | + = , | 4×25%=1, | 1-8.5%=0.915. |
故答案为:0,1,
,4,
,
,5,
,
,
,1,0.915.
分析:分数乘法:分子相乘的积作分子,分母相乘的积作分母;分数除法根据除以一个数等于乘这个数的倒数计算;分数加减法先通分,化成同分母的分数再相加减.
点评:本题考查了有关分数的四则运算,计算时要细心,把结果化成最简分数.
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