-0.5x=20% 0.7:5.6=x:16
1.38﹣0.03=
÷ =
0.28× =
36×25%=
﹣ =
0.72÷0.04=
400÷25÷4=
0.3×2÷0.3×2=
2.3+5.7=
12.2﹣0.5=
140×0.3=
401﹣198=
3600÷12=
+ =
×240=
25%×5.6÷ =
20﹣12÷
① x- x=24
②
③ x+ x=
④24÷2x=4
40×25%= 1.03×10= 3×45= 1÷10%= 2.8×=
1.57﹣0.85= 0.49÷0.7= 3.05+6.2= 0.6:0.75= kg:40g=
0.4÷0.2= 1÷= 406﹣299= a﹣a×0=