How to do the first volume of mathematics in the sixth grade of primary school 1, 5 and 6 questions, and find the answer! !
1.5 20 1000 25
5.4350-2700= 1650 1650/4350=0.379
6.1.25-1.20 = 0.05 0.05/1.2 = 0.04 It seems that I haven't done this kind of problem for a long time.