1.5÷=
7.4+6=
5-1.4-0.6=
10-0.09=
70%x-x= x:(3x-1)= x+25=60-x
43.5-3.5= = ÷ = - = 2.7- - =
6.2×9.9≈ 2.8× = 1÷9= 25÷25%= × ÷ × =
15.6-4.6= 11.2+8= 0.55×2= ÷ =
25×0.8= 0.25÷ = - = 1.5+ =
1÷ = 32×10= 4.7÷4.7=
5- = ×16= 3.14-3.1=
0.25×40= 985÷5= 12%+78%=