75%×=
50%+2=
1.5+25=
3.14×22=
3-=
302+402=
1.21×=
1+0.25×25%=
10÷10%=
×3=
÷1.5=
3:0.9
140:21
640克:8千克
×= 0.36×= ÷18= ÷=
×1.5= 2.7÷= 0×+= ×3÷×3=
2- = 4.9× = ÷ = ×10=
× = 3.3× = ×12.5= 1÷ =
100×2.5%= 6.8÷10%= 1-35%= × ÷ × =
×= ×3.9= 12÷= ÷= +×=
48×= ÷= 1.5÷= ×= ×÷×=
36× = 18÷ = 7× = =