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简便计算5.74+2.68+4.26

5.74+2.68+4.26 =(5.74+4.26)+2.68 =10+2.68 =12.68 你好,本题已解答,如果满意 请点右上角“采纳答案”。

5.74+3.26-(2.24+4.58)=9-6.82=2.18

9.99-4.26+90.01-5.74 =9.99+90.01-(4.26+5.74) =100-10 =90

①5.74-2.42+3.26-4.58=5.74+3.26-(2.42+4.58),=9-7,=2;②9999×1111+3333×6667=(3333×3)×1111+3333×6667=3333×3333+3333×6667=3333×(3333+6667)=3333×10000=33330000;③0.49×3500+490×1.2+4.9×520+49=49×35+49×12+49×52+49,=(35+12+52+...

(1)0.36×1.5×0.4,=0.36×(1.5×0.4),=0.36×0.6,=0.216;(2)0.05×3.2×40,=(0.05×40)×3.2,=2×3.2=6.4;(3)26×15.7+15.7×74,=(26+74)×15.7,=100×15.7,=1570;(4)3.78×0.5-0.65,=1.89-0.65,=1.24;(5)3.98+13.4×0.24,=3.9...

(1)35.27-(6.27+0.86)=35.27-6.27-0.86=29-0.86=28.14;(2)23.46-4.26-5.74=23.46-(4.26+5.74)=23.46-10=13.46;(3)15.42+8.7+1.3+4.58=(15.42+4.58)+(8.7+1.3)=20+10=30;(4)5.74+1.98+3.26=5.74+3.26+1.98=9+1.98=10.98;(5...

5.526-4.84+4.474-3.16 =(5.526+4.474)-(4.84+3.16) =10-8 =2

[image]20 (+26.5)+(-18)+(-11/4)+74+(-32.5)+(-23/4)=? =26,5-18-11/4+74-32,5-23/4 =26,5+74-18-32,5-11/4-23/4 =100,5-50,5-34/4 =50-8,5 =41,5

25.4×25.4+25.4+26.4×74.6=25.4×(25.4+1)+26.4×74.6 =25.4×26.4+26.4×74.6 =26.4×(25.4+74.6) =2640 9999×1234-3333×3702=3333×3×1234-3333×3702 =3333×(3702)-3333×3702 =0

9.99-4.26+90.01-5.74 =10-0.01+90+0.01-(4.26+5.74) =10+90-10 =90

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