
计算:(1)23-17-(-7)+(-16);(2)?5+6÷(?2)×13;(3)?36×(14?19?112)÷(?2);(4)-23+|5-8|+
计算:(1)23-17-(-7)+(-16);(2)?5+6÷(?2)×13;(3)?36×(14?19?112)÷(?2);(4)-23+|5-8|+24÷(-3)....
计算:(1)23-17-(-7)+(-16);(2)?5+6÷(?2)×13;(3)?36×(14?19?112)÷(?2);(4)-23+|5-8|+24÷(-3).
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(1)原式=23-17+7-16
=23+7-17-16
=30-33
=-3;
(2)原式=-5+(-3)×
=-5-1
=-6;
(3)原式=[-36×
-(-36)×
-(-36)×
]÷(-2)
=[-9-(-4)-(-3)]÷(-2)
=[-9+4+3]÷(-2)
=(-2)÷(-2)
=1;
(4)原式=-8+3+(-8)
=-8-8+3
=-16+3
=-13.
=23+7-17-16
=30-33
=-3;
(2)原式=-5+(-3)×
1 |
3 |
=-5-1
=-6;
(3)原式=[-36×
1 |
4 |
1 |
9 |
1 |
12 |
=[-9-(-4)-(-3)]÷(-2)
=[-9+4+3]÷(-2)
=(-2)÷(-2)
=1;
(4)原式=-8+3+(-8)
=-8-8+3
=-16+3
=-13.
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