问题
解答题
用简便方法计算: (1)(-125)×32×(-1)3×(-0.25); (2)71
(3)62×(
|
答案
(1)原式=-125×8×4×
=-1000;1 4
(2)原式=(72-
)×(-8)=-576+1 16
=-5751 2
;1 2
(3)原式=36×
-36×1 4
+36×5 9
=9-20+21=10.7 12
用简便方法计算: (1)(-125)×32×(-1)3×(-0.25); (2)71
(3)62×(
|
(1)原式=-125×8×4×
=-1000;1 4
(2)原式=(72-
)×(-8)=-576+1 16
=-5751 2
;1 2
(3)原式=36×
-36×1 4
+36×5 9
=9-20+21=10.7 12