Question

3.17×0.45+68.3×0.045用简便方法计算

3.17×0.45+68.3×0.045用简便方法计算

Answer 1

3.17×0.45+68.3×0.045用简便方法计算
解：采用分配律，
原式=3.17×0.45+68.3×0.045
=3.17x0.45+6.83x0.45
=0.45x（3.17+6.83）
=0.45x10
=4.5

Answer 2

3.17×0.45+68.3×0.045
=3.17×10×0.045+68.3×0.045
=31.7×0.045+68.3×0.045
=（31.7+68.3）×0.045
=100×0.045
=4.5

Answer 3

3.17×0.45+68.3×0.045
=3.17x0.45+6.83x0.45
=（3.17+6.83）x0.45
=10x0.45
=4.5