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25乘以百分之75加38乘以0.75加4分之3乘以37用简便...

38X1/4+17x0.25+45x0.75 =1/4x(38+17+135) =1/4x190 =47.5 如有帮助请采纳, 如对本题有疑问可追问,Good luck!

203x23 =(200+3)x23 =200x23+3x23 =4600+69 =4669 25x75x4 =25x4x75 =100x75 =7500 38x27+27x62 =27x(38+62) =27x100 =2700

3.83×4.56+38.3×0.544 =38.3×(0.456+0.544) =38.3×1 =38.3 你好,本题已解答,如果满意 请点右上角“采纳答案”。

76乘以三十四加上三十八乘以三十二 =38*2*34+38*32=38*(34*2+32)=38*100=3800

38加4加20乘18 =42+360 =402

38乘四分之一+17乘0.25加45乘25% =38×0.25+17×0.25+45×0.25 =(38+17+45)×0.25 =100×0.25 =25

0.8乘38加61乘5分之4加百分之80有简便方法计算 0.8乘38加61乘5分之4加百分之80 =0.8*(38+61+1) =0.8*100 =80

0.25乘以38加63乘以0.25减四分之一 =0.25x(38+63-1) =0.25x100 =25

4×38×25=(4×25)×38,运用了乘法交换律和乘法结合律。

19/12÷4/37x38/3÷37/32 =19/12x37/4x38/3x32/37 =19/12x38/3x37/4x32/37 =19/12x38/3x8 =1444/9 =160又4/9 谢谢,请采纳

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