3× = × = × = + =
×21= 1- = ÷ = ÷ =
6.5÷100= 4.8×0.1= 5÷7= 0.5×40=
- = + = 0.5+ = 0.75- =
=
0.7-0.7×0.7=
0.75+=
2.3×0.4÷2.3×0.4=
1.5﹣0.45= 7.81+0.9= 7.5﹣2.5=
12÷0.4= 9.56+4.44= 2.9+3.7+2.1=
23= 1.25×5×8= 7.6×8+2.4×8=
÷ = + = - = 2÷ = 1-70%=
3.14×6= 100÷12.5= 0.16÷0.4= 14÷35= 5×40%=