5.5÷0.25+4.5x4用简便方法计算

2025-06-28 21:31:07
推荐回答(2个)
回答1:

5.5÷2.5+4.5×4
=5.5×4+4.5×4
=<5.5+4.5>×4
=1×4
=4

回答2:

5.5÷0.25+4.5x4
=5.5x(1/4)+4.5x4
=1.375 +18
=19.375