Question

8.3×41.7+52.8×1.7用最简便的方法？

Answer 1

8.3×41.7+52.8×1.7
＝8.3×（40+1.7）+52.8×1.7
＝8.3×40+8.3×1.7+52.8×1.7
＝1.7×（52.8+8.3）+8.3×40
＝1.7×61.1+332
＝（1+0.7）×61.1+332
＝61.1+0.7×61.1+332
＝61.1+42.77+332
＝103.87+332
＝435.87

Answer 2

8.3x（40+1.7）+52.8x1.7=332+61x1.7+0.17=332.17+102+1.7=435.87

Answer 3

8.3×41.7+52.8×1.7
=8.3×40+8.3×1.7+52.8×1.7
=8.3×40+(8.3+52.8)×1.7
=332+61.1×1.7
=332+103.87
=335.87
没找到更简便算法

Answer 4

8.3×41.7+52.8×1.7
=8.3×（40+1.7）+52.8x1.7
=332+8.3x1.7+52.8x1.7
=332+（7.2+1.1）x1.7+52.8x1.7
=332+1.7x（7.2+52.8）+1.87
=333.87+1.7x60
=333.87+102
=435.87