问题
解答题
脱式计算.
42×5+54
340+540÷9
120÷8×7
(837-637)×6.
答案
(1)42×5+54
=210+54
=264
(2)340+540÷9
=340+60
=400
(3)120÷8×7
=15×7
=105
(4)(837-637)×6
=200×6
=1200
脱式计算.
42×5+54
340+540÷9
120÷8×7
(837-637)×6.
(1)42×5+54
=210+54
=264
(2)340+540÷9
=340+60
=400
(3)120÷8×7
=15×7
=105
(4)(837-637)×6
=200×6
=1200