4.52×1.25+4.48÷4/5-5/4(简算)
问题描述:
4.52×1.25+4.48÷4/5-5/4(简算)
答
4.52×1.25+4.48÷4/5-5/4
=4.52×5/4+4.48×5/4-5/4
=5/4×(4.52+4.48-1)
=5/4×8
=10