7.2÷0.25+2,8×4简便算法是

7.2÷0.25+2,8×4简便算法是
2025-05-13 07:53:36
推荐回答(1个)
回答(1):

7.2÷0.25+2.8×4
=(10-2.8)÷0.25+2.8×4
=(10-2.8)×4+2.8×4
=10×4-2.8×4+2.8×4
=10×4
=40