题目内容
下列计算:①-|-2|-|-3|=-5 ②-14-2÷(-| 1 |
| 2 |
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
| 5 |
| 13 |
| 1 |
| 6 |
| 5 |
| 6 |
分析:根据有理数的混合运算规则、绝对值的定义,分别对每个式子计算,再与各式结果对比即可.
解答:解:①-|-2|-|-3|=-2-3=-5;
②-14-2÷(-
)=-1-2×(-2)=-1+4=3;
③-
÷(-
)×
=-
×(-
)×
=
;
④-22-(-2)3+(-
)÷(-2)=-4+8+
×
=4
⑤(-8)×
×(-0.125)×(-2
)=[(-8)×(-0.125)]×[
×(-
))]=1×(-
)=-
.
故答案为①④⑤
②-14-2÷(-
| 1 |
| 2 |
③-
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 27 |
| 64 |
④-22-(-2)3+(-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
⑤(-8)×
| 5 |
| 13 |
| 1 |
| 6 |
| 5 |
| 13 |
| 13 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
故答案为①④⑤
点评:本题考查有理数的混合运算规则与绝对值的定义.解决本题的关键是计算出各式的值对比.
练习册系列答案
相关题目