题目内容
计算:
(1)[1
-(
-
+
]×24]÷(-5);
(2)(-10)+8×(-2)2-(-4)×(-3);
(3)-0.252÷(-0.5)3+(
-
)×(-1)10;
(4)-3×(-
)2-4×(1-
)-8÷(
)2;
(5)(-2)3-1
×(-
)-(-2)×(-1)×(-4).
(1)[1
| 2 |
| 13 |
| 5 |
| 8 |
| 1 |
| 6 |
| 7 |
| 12 |
(2)(-10)+8×(-2)2-(-4)×(-3);
(3)-0.252÷(-0.5)3+(
| 1 |
| 8 |
| 1 |
| 2 |
(4)-3×(-
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
(5)(-2)3-1
| 3 |
| 4 |
| 8 |
| 21 |
(1)原式=(
-15+4-14)×(-
)
=(
-25)×(-
)
=4
;
(2)原式=-10+32-12=10;
(3)原式=-
÷(-
)+(-
)
=
-
=
;
(4)原式=-3×
-4×
-8×
=-
-18
=-20
;
(5)原式=-8+
×
+8
=-8+
+8
=
.
| 5 |
| 13 |
| 1 |
| 5 |
=(
| 5 |
| 13 |
| 1 |
| 5 |
=4
| 12 |
| 13 |
(2)原式=-10+32-12=10;
(3)原式=-
| 1 |
| 16 |
| 1 |
| 8 |
| 3 |
| 8 |
=
| 1 |
| 2 |
| 3 |
| 8 |
=
| 1 |
| 8 |
(4)原式=-3×
| 4 |
| 9 |
| 1 |
| 3 |
| 9 |
| 4 |
=-
| 8 |
| 3 |
=-20
| 2 |
| 3 |
(5)原式=-8+
| 7 |
| 4 |
| 8 |
| 21 |
=-8+
| 2 |
| 3 |
=
| 2 |
| 3 |
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