题目内容
【题目】脱式计算.
(390+30)÷7
340÷5÷2
205+675÷5.
【答案】(1)(390+30)÷7
=420÷7
=60
(2)340÷5÷2
=68÷2
=34
(3)205+675÷5
=205+125
=340
【解析】解:(1)(390+30)÷7
=420÷7
=60
(2)340÷5÷2
=68÷2
=34
(3)205+675÷5
=205+125
=340
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题目内容
【题目】脱式计算.
(390+30)÷7
340÷5÷2
205+675÷5.
【答案】(1)(390+30)÷7
=420÷7
=60
(2)340÷5÷2
=68÷2
=34
(3)205+675÷5
=205+125
=340
【解析】解:(1)(390+30)÷7
=420÷7
=60
(2)340÷5÷2
=68÷2
=34
(3)205+675÷5
=205+125
=340