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28乘83竖式计算并验算

28 × 83 = 2324 验算 2324 ÷ 28 = 83

47乘于28的竖式计算 并验算 47*28 =1316 验算: 1316÷47=28

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4.21-1.28=2.93验算:78×24=1872验算:50.9+0.47=51.37验算:642÷8=80.25验算:29×72=2088验算:758÷5=151.6验算:9.24-0.69=8.55验算:23.56+12.48=36.04验算:

比如3乘2等于6,验算是6除以2等于3

18 12

=18/24=3/4;=52.95/75=353/500;=84.01/31=271/100;=176.4/56=63/20;=4.95/11=9/20;=3.01/7=43/100;=2.8/35=2/25;=0.646/19=17/500

10-3.528=6.472验算:20.2+1.58=21.78验算:611÷47=13验算:

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