题目内容
计算:
(1)-
-(-
)-(-
)-
(2)(-81)÷
×
÷(-16)
(3)(-
+
+
-
)×(-62)(用简便运算)
(4)-24+3×(-1)4-(-2)3.
(1)-
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 2 |
(2)(-81)÷
| 9 |
| 4 |
| 4 |
| 9 |
(3)(-
| 5 |
| 6 |
| 1 |
| 3 |
| 1 |
| 2 |
| 3 |
| 4 |
(4)-24+3×(-1)4-(-2)3.
(1)原式=-
+
+
-
=-
;
(2)原式=-81×
×
×(-
)=1;
(3)原式=(
+
+
-
)×(-36)=-30-12-18+27=-33;
(4)原式=-16+3+8=-5.
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 2 |
| 5 |
| 12 |
(2)原式=-81×
| 4 |
| 9 |
| 4 |
| 9 |
| 1 |
| 16 |
(3)原式=(
| 5 |
| 6 |
| 1 |
| 3 |
| 1 |
| 2 |
| 3 |
| 4 |
(4)原式=-16+3+8=-5.
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