【题目】脱式计算.
①322+168﹣274
②168+72÷8
③(238+162)×9
④7×(66﹣53)
【答案】①216
②177
③3600
④91
【解析】
①322+168﹣274
=490﹣274
=216
②168+72÷8
=168+9
=177
③(238+162)×9
=400×9
=3600
④7×(66﹣53)
=7×13
=91

【题目】脱式计算.
①322+168﹣274
②168+72÷8
③(238+162)×9
④7×(66﹣53)
【答案】①216
②177
③3600
④91
【解析】
①322+168﹣274
=490﹣274
=216
②168+72÷8
=168+9
=177
③(238+162)×9
=400×9
=3600
④7×(66﹣53)
=7×13
=91