题目内容
计算(1)26-17-(-6)-33=
(2)-32÷
| 4 |
| 9 |
| 2 |
| 3 |
(3)(-36)×(
| 3 |
| 4 |
| 1 |
| 6 |
| 11 |
| 12 |
分析:按照有理数混合运算的顺序,先乘除后加减,有括号的先算括号里面的,计算过程中注意正负符号的变化.
解答:解:(1)26-17-(-6)-33,
=26-17+6-33,
=-18;
(2)-32÷
×(-
)3,
=-9×
×(-
),
=6;
(3)(-36)×(
-
-
),
=-36×(-
),
=12.
=26-17+6-33,
=-18;
(2)-32÷
| 4 |
| 9 |
| 2 |
| 3 |
=-9×
| 9 |
| 4 |
| 8 |
| 27 |
=6;
(3)(-36)×(
| 3 |
| 4 |
| 1 |
| 6 |
| 11 |
| 12 |
=-36×(-
| 1 |
| 3 |
=12.
点评:本题考查的是有理数的运算能力和简便运算.
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