题目内容
脱式计算
(1)200×3+800
(2)60×4-80
(3)75+20×4.
(1)200×3+800
(2)60×4-80
(3)75+20×4.
(1)200×3+800
=600+800
=1400;
(2)60×4-80
=240-80
=160;
(3)75+20×4
=75+80
=155.
=600+800
=1400;
(2)60×4-80
=240-80
=160;
(3)75+20×4
=75+80
=155.
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