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脱式计算.6.7十19.34一3.63/0.6

好像不能简算嘛,6.7+19.34-6.05=19.99.

(1)7.85÷0.25×6.48=31.4×6.48=203.472 (2)6.7+19.34﹣3.63÷0.6=6.7+19.34﹣6.05=26.04﹣6.05=19.99 (3)0.24×[151﹣(53.2﹣2.2)÷0.51]=0.24×[151﹣51÷0.51]=0.24×[151﹣100]=0.24×(50+1)=0.24×50+0.24×1=12+0.24=12.24 (4)7.38÷[4.6...

66 3.34 =6.34 =6.66 3.63÷0.05+19.6 19用简便计算6.66+19.63÷0.34 6.6 19.66+6.34+6.05 =32

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