Question

8.3x99+0.83简便计算？

8.3x99十0.83

Answer 1

8.3*99+0.83
=8.3*（100-1）+0.83
=8.3*100-8.3+0.83
=830-8.3+0.83
=821.7+0.83
=822.53

Answer 2

8.3×99+0.83
=8.3×(100-1)+0.83
=830-8.3+0.83
=822.53

Answer 3

解：原式=8.3×99+8.3-8.3+0.83
=8.3×（99+1）-7.47
=830-7.47
=822.53

Answer 4

8.3 x99+0.83
=8.3x100-8.3+0.83
=830-8.3+0.83
=821.7+0.83
=822.53

Answer 5

8.3×99+0.83
=8.3×99+8.3×0.1
=8.3×(99+0.1)
=8.3×99.1
=822.53