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1800÷25+75×5怎么算打草稿的算法

25+75-25+75简便计算 25+75-25+75 =(25-25)+(75+75) =0+150 =150

,(8,25-3,75)÷2,5÷4减易法怎么算 =(8.25-4+0.25)/(2.5x4) =4.5/10 =0.45

(25×3+75+5×15)÷3=(25×3)÷3+75÷3+(5×15)÷3=25+25+25=75

see

原式 =(25+75)x75 =100x75 =7500 供参考。

25x(5x92+25+3×5) =25x5x(92+5+3) =125xl00 =12500

(1)9750÷25+75=390+75,=465;(2)(2.32+1.8)×6.5=4.12×6.5,=26.78;(3)101×7.8=100×7.8+7.8,=780+7.8,=787.8;(4) 5 8 × 8 15 + 3 4 ÷ 1 4 = 1 3 +3,= 3 1 3 ;(5) 1 3 ÷[ 3 4 -( 1 18 + 5 12 )] = 1 3 ÷[ 3 4 - 17 36 ],= 1 ...

124×75-72×25+75×2用简便运算 =124x75-24x75+75x2 =(124-24)x75+150 =100x75+150 =7500+150 =7650

(1)125-25×6=125-150=-25;(2)(135+75)÷(14×5)=210÷70=3;(3)735÷5-17=147-17=130;(4)1024÷16×3 =64×3=192;(5)(135+415)÷5+16 =550÷5+16=110+16=126;(6)1200-20×18=1200-360=840.

75%×5/6+25%÷6/5 =75%×5/6+25%x5/6 =5/6x(75%+25%) =5/6x100% =5/6 求采纳

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