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口算:5.5×2=9.6÷4.8=23%1.5×2=2×3.1=2.4×0.5=0.12...

5.5×2=119.6÷4.8=23-1.5×2=02×3.1=6.22.4×0.5=1.20.125×8-0.1=0.90.48÷6=0.086.4-4=2.40.6÷3+3=3.20.91÷13=0.073.25+0.75=49.9-0.9÷0.1=0.917×40=680 100-63=37 3.2+1.68=4.884.8÷8=0.60.5+0.5÷0.5=1.550×0.8=400.99÷33=0.034×7.5×2.5=754.5×0.1...

0.12×4.8÷0.12×4.8 =4.8÷0.12×0.12×4.8 =4.8×4.8 =23.04

12(×-0.4)=14.4 x-0.4=1.2 x=1.2+0.4 x=1.6 4.8-×=2.9 4.8-2.9=x x=1.9 0.5×÷4=0.8 0.5x=3.2 x=6.4 5-0.9×=2.75 5-2.75=0.9x 0.9x=2.25 x=0.25

0.12×0.6=0.072, 4.5+0.76=5.26, 2-0.72=1.28, 2.1÷2=1.05, 3.6÷0.09=40, 7.5×0.4=3, 3.8a+1.02a=4.82a, 9.6÷0.06=160, 3.57÷0.7=5.1, 3.2×0.5=1.6, 0.4×0.3×2.5=0.3, 4.8+6.3+5.2=16.3.

1.8+2.6=4.4 2.5×4=10 12.5×8=100 1.65÷(6.5÷6.5)=1.65 4.8+8=12.8 0.5+9=9.5 0.53-0.4=0.13 0.8+0.2×4=1.6 7.5-7.5=0 0.6×9=5.4 7-1.5=5.5 5.9×3.6×0=0.

1.8+2.6=4.4 2.5×4=10 12.5×8=100 1.65÷(6.5÷6.5)=1.65 4.8+8=12.8 0.5+9=9.5 0.53-0.4=0.13 0.8+0.2×4=1.6 7.5-7.5=0 0.6×9=5.4 7-1.5=5.5 5.9×3.6×0=0.

0.96÷2=0.48 4.8÷0.3=16 0.56÷0.07=8 0.24×0.5=0.12 1.5×0.5=0.75 60×0.8=48 0.42×5=2.1 0.06×0.9=0.054 1.6÷2=0.8 0.28÷14=0.02 1.64÷41=0.04 10÷20=0.5 2.8÷4=0.7 4.8÷12=0.4 5.2÷13=0.4 12.5÷5=2.5 0.8×1.1=0.88 3.5×0.3=1.05 7.2+12.8=20 4...

2.5×0.2=0.5 4.8÷0.2=24 20+0.04=20.04 12-1.2=10.8 1.3×0.5=0.65 0.42÷0.06=7 5.6÷0.7=8 0.21×0.4=0.084 5.05÷0.5=10.1 6.6÷11=0.6

6.1×0.2=1.22 1.5×6=9 3.9÷3=1.3 3.7+0.35=4.05 3.4-0.5=2.9 4.8÷0.8=6 0.12×3=0.36 0.32÷0.004=80 0.25×0.4=0.1 40÷100=0.4

解:0.96÷2=0.48 4.8÷0.3=16 0.56÷0.07=8 0.24×0.5=0.12 1.5×0.5=0.75 60×0.8=48 0.42×5=2.1 0.06×0.9=0.054 1.6÷2=0.8 0.28÷14=0.02 1.64÷41=0.04 10÷20=0.5 2.8÷4=0.7 4.8÷12=0.4 5.2÷13=0.4 12.5÷5=2.5 0.8×1.1=0.88 3.5×0.3=1.05 7.2+12.8=...

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