题目内容
计算:
(1)-8+15×(-
)
(2)(-2)2×5-(-2)3÷4.
(1)-8+15×(-
| 2 |
| 3 |
(2)(-2)2×5-(-2)3÷4.
(1)-8+15×(-
)
=-8-10
=-18;
(2)(-2)2×5-(-2)3÷4
=4×5+8÷4
=20+2
=22.
| 2 |
| 3 |
=-8-10
=-18;
(2)(-2)2×5-(-2)3÷4
=4×5+8÷4
=20+2
=22.
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