Question

5.39×199+53.9×0.1怎么简便计算？

Answer 1

5.39×199+5.39×10×0.1=5.39×199+5.39×1=5.39×（199+1）=5.39×200=5.39×2×100=539×2=1078

Answer 2

5.39×199+53.9×0.1=5.39×199+5.39=5.39×199+5.39×1=5.39×（199+1）=5.39×200=1078

Answer 3

5.39×199+53.9×0.1
＝5.39×199+（5.39×10）×0.1
＝5.39×199+5.39×（10×0.1）
＝5.39×（199+1）
＝5.39×200
＝1078

Answer 4

5.39X199+53.9X0.1
=53.9X19.9+53.9X0.1
=53.9X（19.9+0.1）
=53.9X20
=1078

Answer 5

5.39X199十53.9x0.1
=5.39X199十5.39x1
=5.39x（199十1）
=5.39X200
=1078