题目内容
(1)(-4)×(-8);
(2)36÷(-9);
(3)48
×(-5);
(4)(+22)×(-33)×(-4)×0;
(5)(-32)÷4×(-8);
(6)75÷(-
)×(-
);
(7)(-
)×0.125×(-2
)×(-8);
(8)-32-(-2)2;
(9)2×(-3)2-5÷
×2;
(10)-125÷(-25)-64÷(-4).
(2)36÷(-9);
(3)48
| 24 |
| 25 |
(4)(+22)×(-33)×(-4)×0;
(5)(-32)÷4×(-8);
(6)75÷(-
| 2 |
| 3 |
| 3 |
| 2 |
(7)(-
| 3 |
| 7 |
| 1 |
| 3 |
(8)-32-(-2)2;
(9)2×(-3)2-5÷
| 1 |
| 2 |
(10)-125÷(-25)-64÷(-4).
(1)(-4)×(-8)
=4×8
=32;
(2)36÷(-9)
=-36÷9
=-4;
(3)48
×(-5)
=(49-
)×(-5)
=49×(-5)-
×(-5)
=-245+
=-244
;
(4)(+22)×(-33)×(-4)×0=0;
(5)(-32)÷4×(-8)
=(-8)×(-8)
=64;
(6)75÷(-
)×(-
)
=75×
×
=
;
(7)(-
)×0.125×(-2
)×(-8)
=(-
)×
×(-
)×(-8)
=-1;
(8)-32-(-2)2
=-9-4
=-13;
(9)2×(-3)2-5÷
×2
=2×9-5×2×2
=18-20
=-2;
(10)-125÷(-25)-64÷(-4)
=5+16
=21.
=4×8
=32;
(2)36÷(-9)
=-36÷9
=-4;
(3)48
| 24 |
| 25 |
=(49-
| 1 |
| 25 |
=49×(-5)-
| 1 |
| 25 |
=-245+
| 1 |
| 5 |
=-244
| 4 |
| 5 |
(4)(+22)×(-33)×(-4)×0=0;
(5)(-32)÷4×(-8)
=(-8)×(-8)
=64;
(6)75÷(-
| 2 |
| 3 |
| 3 |
| 2 |
=75×
| 3 |
| 2 |
| 3 |
| 2 |
=
| 675 |
| 4 |
(7)(-
| 3 |
| 7 |
| 1 |
| 3 |
=(-
| 3 |
| 7 |
| 1 |
| 8 |
| 7 |
| 3 |
=-1;
(8)-32-(-2)2
=-9-4
=-13;
(9)2×(-3)2-5÷
| 1 |
| 2 |
=2×9-5×2×2
=18-20
=-2;
(10)-125÷(-25)-64÷(-4)
=5+16
=21.
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