脱式计算.能简便的要简便运算.2.87×〔6.3-2.3〕54.7-45.3÷152.008×1999+2.00810.8÷〖〔5_数学解答

脱式计算.能简便的要简便运算.
2.87×〔6.3-2.3〕
54.7-45.3÷15
2.008×1999+2.008
10.8÷〖〔5.28-1.68〕×0.3〗0.5
3.69÷〔1.23×0.5〕

人气：178 ℃　时间：2020-04-04 19:59:45

解答

2.87×〔6.3-2.3〕=2.87×4.0=11.48 54.7-45.3÷15=54.7-3.02=51.68 2.008×1999+2.008=4013.992+2.008=4016 10.8÷〖〔5.28-1.68〕×0.3〗0.5=10.8÷（3.6×0.3）×0.5=10.8÷1.08×0.5=10×0.5=5 3.69÷〔1.23×0....