1: ⑴ (ab+ac+bc)×2
⑵ abc
2: 6a2 a3
3: 0.6×0.6×0.6÷0.08=2.7(米)
4: ⑴ 50×15=750(平方米)
⑵ (50×1.4+15×1.4)×2+50×15
=(70+21)×2+750
= 182+750
= 932(平方米)
⑶ 50×15×(1.4-0.2)
= 50×15×1.2
= 900(立方米)
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1: ⑴ (ab+ac+bc)×2
⑵ abc
2: 6a2 a3
3: 0.6×0.6×0.6÷0.08=2.7(米)
4: ⑴ 50×15=750(平方米)
⑵ (50×1.4+15×1.4)×2+50×15
=(70+21)×2+750
= 182+750
= 932(平方米)
⑶ 50×15×(1.4-0.2)
= 50×15×1.2
= 900(立方米)
http://m.ksjqmj.com/liunianjidaan/2148.html
推荐访问