56.6-4.3+43.4-5.7的简便计算
问题描述:
56.6-4.3+43.4-5.7的简便计算
答
=(56.6+43.4)-(4.3+5.7)
=100-10
=90
56.6-4.3+43.4-5.7的简便计算
=(56.6+43.4)-(4.3+5.7)
=100-10
=90