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

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

单项选择题
单项选择题