Question

3.17x45.6+38.3x5.44简便计算？

Answer 1

您好，这题可以这样解，
3.17x45.6+38.3x5.44
=3.17x45.6+3.83x54.4
=3.17x45.6+3.17x54.4+0.63x54.4
=(45.6+54.4)x3.17+0.63x50+0.63x4.4
=317+31.5+2.772
=351.272

Answer 2

=3.17×45.6+3.83×54.4
=3.17×（100-54.4）+3.83×54.4
=317-3.17×54.4+3.83×54.4
=317+54.4（3.83-3.17）
=317+54.4×0.66
=352.904

Answer 3

3.17×45.6+38.3×5.44
＝31.7×4.56+(31.7+6.6)×5.44
＝31.7×4.56+31.7×5.44+6.6×5.44
＝31.7×(4.56+5.44)+6.6×5.44
＝31.7×10+6.6×5.44
＝317+6×5.44+0.6×5.44
＝317+3.264+0.3264
＝320.264+0.3264
＝320.5904

Answer 4

44×3 .6×2 .5=44×2 .5×3 .6=110×3 .6=11×36=396
44分为11x4和4x2.5=10，那么原来的公式= 11 x4 x 3.6 x 2.5 = 11 X10 x 3.6 = 11x 36 = 396。
4× 3.6× 2.5 = 22× (2× 5 )× (0.5× 6 )× 0.6 = 22× 3× (0.6× 10) = 66× 6 = 396.将大数转化为较小数的乘积，是一种通用而快速的计算方法。而且在分解复数因子和用交叉除法分解二次方程方面有很大的使用空间。

Answer 5

3.17x45.6+38.3x5.44
=144.552+208.352
=352.904。