=
10001-999≈
20.97÷3.01≈
10﹣10%=
8×12.5%=
0.3×0.4=
2.95+0.5=
2÷0.25=
85-5.8=
1.2×0.5=
=
7÷70% =
15.6-4.6= 11.2+8= 0.55×2= ÷ =
25×0.8= 0.25÷ = - = 1.5+ =
1﹣1÷9=
70×10%= 45%÷15%= 12
2×= -= 1÷0.05= 9.7+0.03=
12-2= 10×10%= 19×9+9= +=
423÷70≈ 36×19≈ 547-149≈ 312+391≈
A
2
8
B
0.5
x