Question

14.9×2.17-49×0.217怎么简便计算

14.9×2.17-49×0.217怎么简便计算

Answer 1

14.9×2.17-49×0.217怎么简便计算

=14.9x2.17-4.9x2.17
=（14.9-4.9）x2.17
=21.7

Answer 2

原式=14.9×2.17-4.9×2.17
=（14.9-4.9）×2.17
=10×2.17
=21.7