题目内容
口算 1÷
|
0÷3
| ||||||
|
2.6-
| ||||||
0.125×8×
|
10×0.1%= | ||||||
14×
|
(1+
| ||||||
(1+
|
99+1%= |
分析:①除以一个数等于乘这个数的倒数;②0除以任何数都得0;③约分计算;④把分数化为小数,再计算;⑤把小数化为分数计算;⑥把百分数化为分数计算;⑦把除法改为乘法,约分计算;⑧⑨先算括号内的,再算括号外的;⑩把百分数化为小数,再计算.
解答:解:
1÷
|
0÷3
| ||||||||
|
2.6-
| ||||||||
0.125×8×
|
10×0.1%=0.01 | ||||||||
14×
|
(1+
| ||||||||
(1+
|
99+1%=99.01. |
点评:此题考查了分数、小数的混合运算,注意数字转化,同时应注意运算顺序和“0”的特殊作用.
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