
计算:①-32÷(-3)2+3×(-2)+|-4|;②48×(-16+34-112
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(1)-32÷(-3)2+3×(-2)+|-4|
=-9÷9-6+4,
=-1-6+4,
=-3;
(2)48×(-
+
-
)
=48×(-
+
-
),
=48×
,
=24.
=-9÷9-6+4,
=-1-6+4,
=-3;
(2)48×(-
1 |
6 |
3 |
4 |
1 |
12 |
=48×(-
2 |
12 |
9 |
12 |
1 |
12 |
=48×
1 |
2 |
=24.
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