×4.2= 10.4﹣0.8= 44÷ = 0.11÷0.1=
÷ = 8.7÷29= × = 6×( ﹣ )=
x﹣20%x=1.04 42:=x: 15x÷=40
1.6×0.5=
0.8+2.2=
23=
+ =
× =
16÷ =
47+53= 420÷70= 100﹣28.5= 0.03×8= 234﹣199=
50×80= 2.7÷0.9= += 1÷= ×=
1- =
51÷ =
8.5﹣8.5×0=
× ÷ × =
30÷50%=
1÷0.01=
21.3× +11.7× =
29.8﹣10.9=
56+44= 0.9×0.6= 20﹣3.7= 8÷100= 2.5×3.5×4=
-= += 10÷= 15×= ×24+24=
37+68=
21﹣0.1=
3.6× =
÷50%=
0.5: =
1.25×8=
21×498≈
723÷89≈