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列竖式计算:(带*号要验算) 3.25×8=50.4÷48=1.21...

3.25×8=2650.4÷48=1.051.21×18=21.78验算:4.4÷50=0.0885.06×13=65.7840.5÷18=2.25验算:.

2.35×1.2=2.820.21÷0.025=8.42.65÷3.4≈0.8 7.8÷2.2=3.?5?4

2.7 ÷7.5=0.36 0.36 - - - - - - - -

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:

(1)21.9×1.8=39.42; 2 1.9× 1.8 . 1 7 5 2 2 1 9 3 9.4 2 (2)0.29÷1.3≈0.22;

(1)☆626÷3=208…2验算:(2)804÷2=402(3)36×21=756(4)☆28×39=1092验算:

6 2 × 1.21 ------------ 0 . 62 12.4 62 ----------------- 75.02

解答: 解:81÷9=9, 8×9-27=45, 45÷5+21=30, 3×3×6=54, 4×9÷6=6, 36÷4÷3=3, 2×4×5=40, 63÷9×4=28, 3×8-11=13, 40-4×9=4, 30÷6×9=45, 72÷8÷3=3, 8×9-9=63, 6×9-6=48, 9×9-30=51.

329÷47=7756÷21=36935÷57=16…23

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