问题
解答题
简便计算. (
|
答案
(1)(
+5 9
)×365 6
=
×36+5 9
×365 6
=20+30
=50;
(2)
×1017 10
=
×(100+1)7 10
=
×100+7 10
×17 10
=70+7 10
=70
;7 10
(3)
÷3+1 5
×4 5 1 3
=
×1 5
+1 3
×4 5 1 3
=(
+1 5
)×4 5 1 3
=1×1 3
=
.1 3