﹣ = + = 0.25+ = ﹣ = 4×2.5=
0×98.56= 45×11= 0.85﹣15%= 0.65×101﹣0.65=
×10÷ ×10=
135+398= 5﹣0.5= 0.24×50= 2﹣2÷7=
÷2= 1.25×9×8= += (+)×72=
728﹣299= 0.23= 3.6×25%= 6÷=
8﹣1.3﹣1.7=
:x=: 3x﹣0.9=2.4 x+x=132
29+198= 99×2= 305-199= 2.05×4=
8×12.5%= 0.28÷0.7= ×0=
0.68++0.32= ÷+0.75×4=
3.2+6.8= ×33= 39×101= 0.36÷0.6= 705﹣398≈
-= 3.6÷= 5.4×10%= 0.12= +×3=
0.5×1.4= 12÷= 0.72÷0.8 = 7.5+9.95 =
50×20%= -25%=