Question

34.5+4.7-0.55简便计算脱式计算？

34.5+4.7－0.55

Answer 1

34.5+4.7-0.55
=39.2-0.55
=38.65

Answer 2

34.5+4.7-0.55
=34.5-0.55+4.7
=33.95+4.7
=38.65

Answer 3

34.5十4.7一0.55
＝39.2一0.55
＝38.65