1.99×4.3 10.1×7.6 简便运算
问题描述:
1.99×4.3 10.1×7.6 简便运算
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