1.85﹣+= 1÷×= +0.375=
2.4﹣= (+)×2.4= 5÷×5÷=
10×45%= 1.25×8= 40×(1﹣20%)=
90×=
5﹣1.8=
0.72÷6=
1÷0.25=
0.95+0.5=
3.4×0.1=
8﹣8×=
x-x=10.8 +x=20×0.5 x:=2:1.75
78÷[50﹣(50﹣39)] ×25%-÷4 7-÷2-
++12.5% (+)×17×15 2.25×4.8+77.5×0.48