1.99×4.3 10.1×7.6 简便运算_数学解答

1.99×4.3 10.1×7.6 简便运算

人气：225 ℃　时间：2020-04-24 14:32:06

解答

=（2减0.1）x4.3
=2x4.3减0.1x4.3
=8.6减0.43
=8.17=（10+0.1）x7.6
=10x7.6+7.6x0.1
=76+0.76
=76.76