3.15×1.01＝3.15×（1+0.01）＝3.15×1＋3.15×0.01＝3.15+0.0315＝3.1815
=3.15x1+3.15x0.01=3.15+0.0315=3.1815
3.15×1.01
=3.15×(1+0.01)
=3.15+3.15×0.01
=3.15+0.0315
=3.1815
3.15×1.01=3.15+3.15x0.01=3.15+0.0315=3.1815
