Question

8.3×2.9+.83用简便方法咋算

Answer 1

8.3×2.9+.83用简便方法咋算

=8.3*(2.9+0.1)
=8.3*3
=24.9
望采纳

15.6×2.6 10用简便方法咋算

15.6×2.6 +10
=15.6*2.5+1.56+2.5*4
=15.6*2.5+0.56+2.5*0.4+2.5*4
=15.6*2.5+0.56+2.5*4.4
=2.5（15.6+4.4）+0.56
=2.5*20+0.56
=50.56

731-238 338用简便方法咋算

731-238 338用简便方法咋算
=731+（338-238）
=731+100
=831

0.9+0.99+0.999用简便方法咋算

0.9+0.99+0.999
=1-0.1+1-0.01+1-0.001
=3-0.111
=2.889

8.3×2.9+0.71×83的简便脱式简便运算

8.3×2.9+0.71×83
=8.3×2.9+7.1×8.3
=8.3×（2.9+7.1）
=8.3×10
=83

23×53×25简便方法咋算

不能简便的吧！

15.2乘2.5减16用简便方法咋算

15.2×2.5-16
=4×2.5×3.8-16
=10×3.8-16
=38-16=22

0.2008＋2.008＋20.08＋2008用简便方法咋算？

最简单的就是计算机

17000÷125÷8的简便方法咋算

17000÷（125×8）=17000÷1000=17

24×10.2用简便方法计算咋算？（过程）

24×10.2
=24×（10+0.2）
=24×10+24×0.2
=240+4.8
=244.8