+ x=2 8∶x =∶ 50%x-9×3=25
=
10﹣10%=
8×12.5%=
0.3×0.4=
2.95+0.5=
2÷0.25=
3.14×20= 2×= 1+= ()×9=
72÷= 1.5×100= 1.25×8= 99×0.8+0.8=
个数
9
30
35
40
56×10%= 3.2+1.78= ﹣= 0.72÷0.6=
1.25×8= 4÷= ×= ×6÷×6=