问题
解答题
简便运算.
|
答案
(1)
×3 4
+1 11
×1 11
,1 4
=(
+3 4
)×1 4
,1 11
=1×
,1 11
=
;1 11
(2)1.25×2.5×8,
=(1.25×8)×2.5,
=10×2.5,
=25;
(3)136-64-46,
=136-(64+46),
=136-110,
=26;
(4)1.36+5.4+8.64+1.6,
=(1.36+8.64)+(5.4+1.6),
=10+7,
=17.