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[75%(26 44)]*12的简便计算方法是

[75-(26 +44)]*12 =(75-70)*12 =5*12 =60

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25×27×4 =25×4×27 =100×27 =2700

=(13x10+13x16)+12x16 =(13+12)x16+13x10 =25x16+130 =25x4x4+130 =100x4+130 =400+130 =530

(1)12×98×5÷49=12×5×(98×149)=60×2=120;(2)28.2×44.54+4.454×718=28.2×44.54+44.54×71.8=(28.2+71.8)×44.54=100×44.54=4454;(3)22.4×956-1.2×3=3.6-3.6=0;(4)(49-67)-(17-23)=49-67-17+23=49+23-(67+17)=109-1=19.

13.65-(12.73-13.5) =(13.65+13.5)-12.73 =27.15-12.73 =14.42

(114-75)×12÷26的简便方法 (114-75)×12÷26 =39x12÷26 =39÷26x12 =1.5x12 18

66×44+33×12 =66×(44+6) =66×50 =3300 你好,本题已解答,如果满意 请点右下角“采纳答案”。

3-(12.9-84×17),=3-(12.9-12),=3-0.9,=2.1;44.4×25,=11.1×4×25,=11.1×(4×25),=11.1×100,=1100;4013×(26×340),=4013×340×26,=6;2-[16+(34-710)],=2-[16+120],=2-1360,=14760.

将99变一百后,减12.6 第二题一样,,第三题将101变一百后加19.6

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