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简便运算66×37÷66

计算: =(66/66)*37 =1*37 =37

37×35加66×37减37简便运算 =37×(35+66-1) =37×100 =3700

67×35+67×66-67 =67×(35+66-1) =67×100 =6700

66x66/65用简便方法计算 66x66/65 =(65+1)*66/65 =65*66/65+66/65 =66+1+1/65 =67又1/65

66×55 =6×11×5×11 =30×121 =3630

222 ×33+889×66 =222×33+(889×2)×(66÷ 2) =222×33+1778×33 =(222+1778)×33 =2000×33 66000

66.2×9.9的简便运算. 66.2×9.9=66.2×(10-0.1) =66.2×10-66.2×0.1 =662-6.62 =655.38

33×66+99×78 =33×66+33×3×78 =33×(66+3×78) =33×300 =9900

640÷80= 15×5= 23×3= 12×2×5= 480÷80= 16×5= 27×3= 90÷15= 48÷4= 640÷16= 120×5= 12+18+14= 62+160+38= 14×60= 203-80= 50×15×4= 175-56= 250×8= 420×20= 25+67+75= 4500÷300= 25×38= 54+97= 560÷40= 145+55= 46+49+...

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