Question

0.83乘以4.6加8.3乘以0.24加30乘以30.简便方法怎么算？

Answer 1

0.83*4.6+8.3*0.24+30*30
=8.3*（0.46+0.24）+900
=0.83*7+900
=905.81

Answer 2

0.83 x 4.6+8.3x0.24+30x30
=8.3 x 0.46+8.3x0.24+30x30
=8.3 x（0.46+0.24）+30x30
=8.3 x 0.7 +900
=5.81+900
=905.81
简便是思想，其实并不简便

Answer 3

0.83×4.6+8.3×0.24+0.083×30
=0.83×4.6+0.83×2.4+0.83×3
=0.83×（4.6+2.4+3）
=0.83×10
=8.3

Answer 4

0.83x4.6+8.3x0.24+30×30
=0.83x4.6+0.83x2.4+900
=0.83x(4.6+2.4)十900
=0.83×7十900
=905.81