3.17-2.74+4.7+5.26-0.26+6.3簡便計算

3.17-2.74+4.7+5.26-0.26+6.3簡便計算

3.17-2.74+4.7+5.26-0.26+6.3
=3.17+4.7-2.74+5+6.3
=7.87-2.74+11.3
=5.13+11.3
=16.43