24.6-3.98-5.4+6.2简便运算

24.6-3.98-5.4+6.2简便运算
2025-04-28 01:26:14
推荐回答(1个)
回答1:

24.6-3.98-5.4+6.2简便运算
解:采用凑整法,
原式=24.6-5.4-4+0.02+2
=19.2-4+2.02
=15.2+2.02
=17.22