题目内容
计算:
(1)0-(-9)
(2)-3-4+19-11+2
(3)|-2|-(-2.5)-|1-4|
(4)-
×(-3)+(-
)×5
(5)(-36)×(
-
+
)
(6)-14-[3-(-2)3]÷6
(1)0-(-9)
(2)-3-4+19-11+2
(3)|-2|-(-2.5)-|1-4|
(4)-
| 1 |
| 3 |
| 1 |
| 5 |
(5)(-36)×(
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 9 |
(6)-14-[3-(-2)3]÷6
(1)原式=0+9=9;
(2)原式=-7+19-11+2
=12-11+2
=1+2
=3;
(3)原式=2+2.5-3=4.5-3=1.5;
(4)原式=1-1=0;
(5)原式=(-36)×
-(-36)×
+(-36)×
=-27+30-28
=-25;
(6)原式=-1-[3-(-8)]÷6
=-1-[3+8]÷6
=-1-
=-
(2)原式=-7+19-11+2
=12-11+2
=1+2
=3;
(3)原式=2+2.5-3=4.5-3=1.5;
(4)原式=1-1=0;
(5)原式=(-36)×
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 9 |
=-27+30-28
=-25;
(6)原式=-1-[3-(-8)]÷6
=-1-[3+8]÷6
=-1-
| 11 |
| 6 |
=-
| 17 |
| 6 |
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