| 直接写出得数. 3.2÷0.01= | 6.8-1.08= | 5.6+3.99= | 4÷13= |
= | = | ×(15+ )= | 8×125%= |
(1- )×16= | × ÷ × = |
| 3.2÷0.01=320, | 6.8-1.08=5.72, | 5.6+3.99=9.59, | 4÷13= , |
= , | = , | ×(15+ )=5 , | 8×125%=10, |
(1- )×16=2, | × ÷ × = . |
,
,
,5
,10,2,
.分析:5.6+3.99可以把3.99变成4-0.01再计算;
×(15+
),(1-
)×16可以运用乘法分配律简算;
×
÷
×
除法先变成乘法,再根据乘法结合律简算;其它题目按照运算法则直接计算.点评:本题考查了基本的计算,计算时要细心,注意小数点的位置.
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