题目内容
计算下列各题:
(1)-32-(-3)2+23-(-2)3;
(2)(+10
)+(-11.5)+(-10
)-(+4.5);
(3)(-81)÷
×
÷(-16)
(4)
×(-
)÷
×(-
+
+
)×72-(-2)2÷4-1
(5)24×(
-
-
)+(-
)2÷(-
)
(6)-2×32-(-2×3)2
(7)-
×[(-
)÷(0.75-1)+(-2)5].
(1)-32-(-3)2+23-(-2)3;
(2)(+10
| 1 |
| 3 |
| 1 |
| 3 |
(3)(-81)÷
| 9 |
| 4 |
| 4 |
| 9 |
(4)
| 12 |
| 7 |
| 5 |
| 9 |
| 13 |
| 7 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 6 |
(5)24×(
| 1 |
| 6 |
| 3 |
| 4 |
| 5 |
| 8 |
| 1 |
| 3 |
| 1 |
| 72 |
(6)-2×32-(-2×3)2
(7)-
| 4 |
| 5 |
| 1 |
| 2 |
(1)原式=-9-9+8-(-8)=-18+8+8=-2;
(2)(+10
)+(-11.5)+(-10
)-(+4.5);
=(10
-10
)+(-11.5)+(-4.5)
=0+(-16)
=-16;
(3)原式=-81×
×
×(-
)=1;
(4)原式=
×(-
)×
×0×72-4÷4-1=0-1-1=-2;
(5)原式=4-18-15+8+(-8)=-29;
(6)原式=-2×9-(-6)2=-18-36=-54;
(7)原式=-
×[(-
)÷(-0.25)+(-32)]=-
×(-30)=24.
(2)(+10
| 1 |
| 3 |
| 1 |
| 3 |
=(10
| 1 |
| 3 |
| 1 |
| 3 |
=0+(-16)
=-16;
(3)原式=-81×
| 4 |
| 9 |
| 4 |
| 9 |
| 1 |
| 16 |
(4)原式=
| 12 |
| 7 |
| 5 |
| 9 |
| 7 |
| 13 |
(5)原式=4-18-15+8+(-8)=-29;
(6)原式=-2×9-(-6)2=-18-36=-54;
(7)原式=-
| 4 |
| 5 |
| 1 |
| 2 |
| 4 |
| 5 |
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