Question

4.5X3.6+5.8X3.5怎么简便？

Answer 1

4.5×3.6+5.8×3.5
=4.5×（3.5+0.1）+5.8×3.5
=4.5×3.5+4.5×0.1+5.8×3.5
=3.5×（4.5+5.8）+4.5×0.1
=3.5×10.3+0.45
=3.5×（10+0.3）+0.45
=3.5×10+3.5×0.3+0.45
=35+1.05+0.45
=36.5
或者
原式=4.5×3.6+5.8×（3.6-0.1）
=4.5×3.6+5.8×3.6-5.8×0.1
=3.6×（4.5+5.8）-0.58
=3.6×10.3-0.58
=3.6×（10+0.3）-0.58
=3.6×10+3.6×0.3-0.58
=36+1.08-0.58
=36.5

Answer 2

4.5*3.6+5.8*3.5怎么算简便，先算4.5*3.6=16.2，再算5.8*3.5=20.3，然后16.2+20.3=36.5，这样算简便。

Answer 3

=4.5x3.6+5.8x(4.5-1)=4.5x3.6+5.8x4.5-5.8=4.5x(3.6+5.8)-5.8=4.5x9.4-5.8=36.5
方法二
=5x0.9x3.6+5.8x5x0.7
=5x(0.9x3.6+5.8x0.7)
=5x(3.24+4.06)
=5x7.3
=36.5

Answer 4

解:4.5×3.6+5.8×3.5
＝4.5×（4-0.4）+（6-0.2）×3.5
＝4.5×4-4.5×0.4+6×3.5-0.2×3.5
＝18-1.8+21-0.7
＝18+21-（1.8+0.7）
＝39-2.5
＝36.5。

Answer 5

答：4.5x3.6十5.8x3.5
二9Ⅹ1.8十2.9Ⅹ7
二（10一1）Ⅹ1.8十（3一0.1）x7二18一1.8十21一0.7二39一2.5
二36.5