问题 解答题
口算.
0.4×3=
4.35×100=3.5x+x=0.72÷0.9=9.85×0=
40×0.1=32x-4x=7.2÷6=0.25×4=1×0.05=
17a-5a=7.82÷1=0.125×8=99×3.2+6.8=a-0.2a=
0.34÷0.17=4.3×2=5.4×3.7+4.6×3.7=26÷1.3=30.4÷4=
答案

0.4×3=1.2,4.35×100=435,3.5x+x=4.5x,0.72÷0.9=0.8,9.85×0=0,
40×0.1=4,32x-4x=28x,7.2÷6=1.2,0.25×4=1,1×0.05=0.05,
17a-5a=12a,7.82÷1=7.82,0.125×8=1,99×3.2+6.8=323.6,a-0.2a=0.8a,
0.34÷0.17=2,4.3×2=8.6,5.4×3.7+4.6×3.7=37,26÷1.3=20,30.4÷4=7.6.

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