4.9×= ÷= ×60%= (-)×28=
20÷10%= 2.25-= 42×8%= ×÷×=
2.4×50%=
60×30%=
21÷70%=
84÷40%=
2-57%=
1.2+20%=
36×75%=
57÷57%=
①70%x-70=70
②x-75%x=10
③x=+
×= ×3.9= 12÷= ÷= +×=
48×= ÷= 1.5÷= ×= ×÷×=
×2= ×1= ×=
12×= ()2= ×7= ×= 5-=
×= +×=
÷ ÷
× ××