题目内容
计算:
(1)(-81)÷
×
÷(-16);
(2)-1.5+1.4-(-3.6)-4.3+(-5.2);
(3)(-
)×0.125×(-2
)×(-8);
(4)-22×7×(-1)9.
(1)(-81)÷
| 9 |
| 4 |
| 4 |
| 9 |
(2)-1.5+1.4-(-3.6)-4.3+(-5.2);
(3)(-
| 3 |
| 7 |
| 1 |
| 3 |
(4)-22×7×(-1)9.
(1)原式=-81×
×
×(-
)
=1;
(2)原式=-1.5+1.4+3.6-4.3-5.2
=-11+5
=-6;
(3)原式=-
×
×
×8
=-1;
(4)原式=-4×7×(-1)
=28.
| 4 |
| 9 |
| 4 |
| 9 |
| 1 |
| 16 |
=1;
(2)原式=-1.5+1.4+3.6-4.3-5.2
=-11+5
=-6;
(3)原式=-
| 3 |
| 7 |
| 1 |
| 8 |
| 7 |
| 3 |
=-1;
(4)原式=-4×7×(-1)
=28.
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