问题
解答题
(1)(-7)-(-8) (2)5.6-7+3.4 (3)12×(
(4)-32×(-
|
答案
(1)原式=(-7)+8
=1;
(2)原式=5.6+3.4-7
=9-7
=2;
(3)原式=12×
-12×1 4
-12×2 3 1 2
=3-8-6
=-11;
(4)原式=-9×(-
)-16÷(-1 3
)1 2
=3+32
=35.
(1)(-7)-(-8) (2)5.6-7+3.4 (3)12×(
(4)-32×(-
|
(1)原式=(-7)+8
=1;
(2)原式=5.6+3.4-7
=9-7
=2;
(3)原式=12×
-12×1 4
-12×2 3 1 2
=3-8-6
=-11;
(4)原式=-9×(-
)-16÷(-1 3
)1 2
=3+32
=35.