问题 解答题
脱式计算.
280÷7×3
200+810÷9350÷5+143
6×400-250540÷6+10(43+37)×8.
答案

(1)280÷7×3

=40×3

=120;

(2)200+810÷9

=200+90

=290;

(3)350÷5+143

=70+143

=213;

(4)6×400-250

=2400-250

=2150;

(5)540÷6+10

=90+10

=100;

(6)(43+37)×8

=80×8

=640.

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