题目内容
(1)2.5-(-7.5)
(2)(-0.8)×(-2)
(3)(-3)×(-5)-60÷(-2)
(4)(
-
+
)×(-30)
(5)-4+(1-0.2÷
)×(-3)
(6)-13-(1-0.5)×
×[4-(-3)2].
(2)(-0.8)×(-2)
(3)(-3)×(-5)-60÷(-2)
(4)(
2 |
5 |
1 |
15 |
5 |
6 |
(5)-4+(1-0.2÷
3 |
5 |
(6)-13-(1-0.5)×
1 |
3 |
(1)原式=2.5+7.5=10;
(2)原式=1.6;
(3)原式=15+30=45;
(4)原式=-12+2-25=-35;
(5)原式=-4+(1-
×
)×(-3)=-4-3+1=-6;
(6)原式=-1-
×
×(4-9)=-1+1=0.
(2)原式=1.6;
(3)原式=15+30=45;
(4)原式=-12+2-25=-35;
(5)原式=-4+(1-
1 |
5 |
5 |
3 |
(6)原式=-1-
1 |
2 |
1 |
3 |
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