问题
解答题
计算下列各题 (1)-1.5+1.4-(-3.6)-4.3+(-5.2) (2)(-
(3)(-48)÷
(4)5÷[
|
答案
(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×(-23 7
)×(-8)1 3
=-(
×3 7
)×(0.125×8)7 3
=-1×1
=-1;
(3)(-48)÷
÷(-12)×7 4 7 4
=(48×
)×(1 12
×4 7
)7 4
=4×1
=4;
(4)5÷[
-(-1+1 2
)]×42 3
=5÷[
+1 2
]×41 3
=5÷
×45 6
=6×4
=24.