(594+66)÷6 478-78÷3 480÷6×8
630÷7= 15×20= 303÷3= 80×50=
1- = 5×7÷5×7=
70×80=
630÷9=
22×30=
101×6=
480÷8=
25×8=
355÷5=
369÷3=
202×4≈
452÷9≈
297×5≈
179÷6≈
31×4= 23×2= 11×5= 45×2=
40×5= 15×3= 12×3= 5×12=
①576÷4÷3
②(624-246)÷54
③6+54×25
①122+78÷2
②256÷4×11
③(702-347)÷5
1÷0.25= +1 = ×24= + =
400×0.02= 10÷ = 6 ×0= 3× ﹣ ×3=
①36×()
②1.3×37.5%+2.7×
③ [()]
④13÷()×
①101×9.9
②44﹣72÷
③36×()
④÷[(﹣)×3]
⑤95×3.8+6.2÷
⑥0.25×40÷0.25×40