Question

3.56X1.99+3.56的简便计算？

Answer 1

因为1.99＝2-0.01，所以原式等于3.56×（2-0.01）+3.56运用乘法分配律得到3.56×2-3.56×0.01+3.56＝10.6444

Answer 2

以下是简便计算：3.56×1.99+3.56=3.56×（1.99+1）=3.56×2.99=10.6444

Answer 3

3.56×1.99+3.56
＝3.56×（1.99+1）
＝3.56×2.99
＝3.56×（3-0.01）
＝3.56×3-3.56×0.01
＝10.68-0.0356
＝10.6444

Answer 4

3.56×1.99+3.56
=3.56×（1.99+1）
=3.56×（3-0.01）
=3.56×3-3.56×0.01
=（3+0.5+0.06）×3-0.0356
=9+1.5+0.18-0.0356
=9+1+0.5+0.18-0.0356
=10+0.6444
=10.6444

Answer 5

3.56×1.99+3.56
=3.56×（1.99+1）
=3.56×2.99
=3.56×（3-0.01）
=3.56×3-3.56×0.01
=10.680-0.0356
=10.6444