问题
解答题
计算:(1)1
(2)-22+3×(-1)4-(-4)×5 (3)-14×
(4)用简便方法计算:(-36
|
答案
(1)原式=1
-12 3
+41 2
-41 3 1 2
=1
+42 3
-11 3
-41 2 1 2
=6-6
=0.
(2)原式=-4+3×1-(-20)
=-4+3+20
=19.
(3)原式=-4×
×(-15 4
)-1 6 9 8
=
-5 2 9 8
=
.11 8
(4)原式=(-36-
)×9 11 1 9
=-36×
-1 9
×9 11 1 9
=-4-1 11
=-4
.1 11