题目内容
计算下列各题
(1)-1.5+1.4-(-3.6)-4.3+(-5.2)
(2)(-
)×0.125×(-2
)×(-8)
(3)(-48)÷
÷(-12)×
(4)5÷[
-(-1+
)]×4.
(1)-1.5+1.4-(-3.6)-4.3+(-5.2)
(2)(-
3 |
7 |
1 |
3 |
(3)(-48)÷
7 |
4 |
7 |
4 |
(4)5÷[
1 |
2 |
2 |
3 |
(1)-1.5+1.4-(-3.6)-4.3+(-5.2)
=(-1.5-4.3-5.2)+(1.4+3.6)
=-11+5
=-6;
(2)(-
)×0.125×(-2
)×(-8)
=-(
×
)×(0.125×8)
=-1×1
=-1;
(3)(-48)÷
÷(-12)×
=(48×
)×(
×
)
=4×1
=4;
(4)5÷[
-(-1+
)]×4
=5÷[
+
]×4
=5÷
×4
=6×4
=24.
=(-1.5-4.3-5.2)+(1.4+3.6)
=-11+5
=-6;
(2)(-
3 |
7 |
1 |
3 |
=-(
3 |
7 |
7 |
3 |
=-1×1
=-1;
(3)(-48)÷
7 |
4 |
7 |
4 |
=(48×
1 |
12 |
4 |
7 |
7 |
4 |
=4×1
=4;
(4)5÷[
1 |
2 |
2 |
3 |
=5÷[
1 |
2 |
1 |
3 |
=5÷
5 |
6 |
=6×4
=24.
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