计算:(1)-16+23+(-17)-(-7)(2)(-1)2012×6+8÷(-2)3(3)(?36)×(34?56+79)
计算:(1)-16+23+(-17)-(-7)(2)(-1)2012×6+8÷(-2)3(3)(?36)×(34?56+79)....
计算:(1)-16+23+(-17)-(-7)(2)(-1)2012×6+8÷(-2)3(3)(?36)×(34?56+79).
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(1)-16+23+(-17)-(-7)
=-16+23-17+7
=-3;
(2)(-1)2012×6+8÷(-2)3
=1×6+8÷(-8)
=6-1
=5;
(3)(?36)×(
?
+
)
=-36×
+36×
-36×
=-27+30-28
=-25.
=-16+23-17+7
=-3;
(2)(-1)2012×6+8÷(-2)3
=1×6+8÷(-8)
=6-1
=5;
(3)(?36)×(
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 9 |
=-36×
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 9 |
=-27+30-28
=-25.
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