问题 解答题
直接写得数
9-0.22=4.2÷0.14=10÷0.4=4.8+0.3=12×2.5×8=
0.25×4.3×4=15÷1.5+15=0.5×4÷0.5×4=3.8x+2.5x=0.5b-0.2b+1.3b=
答案

9-0.22=8.78,4.2÷0.14=30,10÷0.4=25,4.8+0.3=5.1,12×2.5×8=240,
0.25×4.3×4=4.3,15÷1.5+15=25,0.5×4÷0.5×4=16,3.8x+2.5x=6.3x,0.5b-0.2b+1.3b=1.6b.

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