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25*41简便计算

25×41= 25×(40+1)= 25×40+25= 1000+25= 1025

16x25 =16x(20+5) =16x20+16x5 =320+80 =400 也可以 16x25 =(10+6)x25 =10x25+6x25 =250+150 =400

(1)101×99 =(100+1)×99 =100×99+99 =9999 (2)14×35 =7×2×35 =7×70 =490 (3)25×28 =25×4×7 =100×7 =700 (4)4×9×25 =4×25×9 =100×9 =900 (5)43×5×4 =43×20 =860 (6)15×12 =15×2×6 =30×6 =180 (7)12×(40-5) =12×40-12×5 =480-60 =420 (8)64×9-14×9 ...

3.67×25×4 =3.67×(25×4) =3.67×100 =367

先提取1/4,得到1/4*(39+25*3+26*3/13)=1/4*(39+75+6)=1/4*(45+75)=1/4*120=30

计算 (25+3/4)*4 =25*4+3/4*4 =100+3 =103

你题目错了吧

3.6÷4÷74×1/4-25% =0.9÷74×1/4-1/4 =9/740×1/4-1/4 =(9/740-1)×1/4 =(-731/740)×1/4 =-731/2960

=((1x5x7x8x10)x(2x11)x(3x9)x(4x6))/(27x25x24x22) =2800/25 =112

解:4.25*166-42又1/2*66 =4.25*166-42.5*66 =4.25*6+4.25*160-4.25*10*66 =4.25*6+4.25*(160-660) =4.25*6-4.25*500 =25.5-2125 =2099.5

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