Question

3.6*2.36+3.61*6.4怎样巧算？

Answer 1

3.6*2.36+3.61*6.4怎样巧算？

3.6*2.36+3.61*6.4
=3.6×2.36+（2.36+1.25）×6.4
=（3.6+6.4）×2.36+1.25×6.4
=10×2.36+1.25×0.8×8
=23.6+1×8
=23.6+8
=31.6

巧算:3.6×2.36+3.61×6.4

3.6×2.36+3.61×6.4
=3.6×2.36+(2.36+1.25)×6.4
=3.6×2.36+2.36×6.4+1.25×6.4
=2.36×(3.6+6.4)+5/4×6.4
=2.36×10+5×1.6
=23.6+8
=31.6

3.6*2.36+3.61*6.4怎么巧算

3.6×2.36+3.61×6.4
=3.6×2.36+(2.36+1.25)×6.4
=3.6×2.36+2.36×6.4+1.25×6.4
=2.36×(3.6+6.4)+5/4×6.4
=2.36×10+5×1.6
=23.6+8
=31.6【望采纳，谢谢】

3.6*2.36+3.61*6.4
=3.6*2.36+3.61*（10-3.6）
=3.6*2.36+3.61*10-3.61*3.6
=3.6*2.36-3.61*3.6+36.1
=3.6*（2.36-3.61）+36.1
=3.6*（-1.25）+36.1
=3.6*（-10÷8）+36.1
=-36÷8+36.1
=-4.5+36.1
=31.6
亲，请【采纳答案】，您的采纳是我答题的动力，谢谢。

3.6x2.36+3.61x6.4如何巧算

3.6x2.36+3.61x6.4
=4×(0.9x2.36+3.61x1.6)
=4x(2.124+5.776)
=4x7.9
=4x(8-0.1)
=32-0.4
=31.6

3.6×35 +47.5×6.4怎样巧算

这种题目的特点是：十位数相等，个位数的和为10，它们的巧算方法如下： 1、十位数×(十位数+1) （如33X37中，3×4=12） 2、把上面的得数后补两个00 （1200） 3、个位数×个位数 （如33X37中，3×7=21） 4、把1200+21＝1221 同理，43×47......4×(4+1)=20......补两个0得2000......个数相乘3×7＝21......2000+21＝2021 同理，53×57......5×(5+1)=30......补两个0得3000......个数相乘3×7＝21......3000+21＝3021 同理，74×76......7×(7+1)=56......补两个0得5600......个数相乘4×6＝24......5600+24＝5624 ......

8.5÷6.4+8.5÷3.6怎样巧算

8.5÷6.4+8.5÷3.6
=8.5÷(6.4+3.6)
=8.5÷10
=0.85

3.6+6.4*2.5巧算

3.6+6.4*2.5=3.6+1.6X4x2.5=3.6+1.6X10=3.6+16=19.6

3.6x2.36十3.61x6.4怎么做

3.6x2.36十3.61x6.4
=3.6*2.36+36.1*0.64
=3.6*2.36+3.6*0.64+32.5*0.64
=3.6*(2.36+0.64)+32.5*0.64
=3.6*3+20.8
=10.8+20.8
=31.6

3.6×31.4+31.4×6.4+12.5×6.4巧算

3.6×31.4+31.4×6.4+12.5×6.4
=31.4×（3.6+6.4）+12.5×0.8×8
=31.4×10+10×8
=314+80
=394