问题
解答题
计算(能简算的要简算):
45.6-(5.6-4.17) 32×0.125×2.5 (1
|
答案
(1)
÷14+2 13
×1 14
,11 13
=
×2 13
+1 14
×1 14
,11 13
=(
+2 13
)×11 13
,1 14
=1×
,1 14
=
;1 14
(2)45.6-(5.6-4.17),
=45.6-5.6+4.17,
=40+4.17,
=44.17;
(3)32×0.125×2.5,
=8×4×0.125×2.5,
=(8×0.125)×(4×2.5),
=1×10,
=10;
(4)(1
-0.375)÷[1 2
+(1 25
+2.1)],2 5
=1
÷[1 8
+21 25
],1 2
=1
÷21 8
,27 50
=
×9 8
,50 127
=
.225 508