Question

A cd store sold 3,467 cds in 7 days . About the same number of cds were sold each day .About how many cds did the store sell each day?

Answer 1

3,467 divided by 7 will give you the amount sold per day..
3,467 divided by 7 is 495.28571... round this to 495
about 495 were sold per day

Answer 2

We need to divide the number of CDs sold, 3,467, by the number of days, 7

In order to estimate the quotient, we will use compatible numbers.

3,467 is close to 3,500

Remember: Compatible numbers are numbers that are close in value to the actual numbers, and which make it easy to perform mental arithmetic.

Some examples of compatible numbers when doing division are 400 and 10, 36 and 6, 2400 and 12, and 64 and 8

3,500 and 7 are compatible because when doing this division (3,500 ÷7 ), we can quickly divide 35  by 7 to get 5 and put two zeros at the end to get 500

3,500 ÷ 7 = 500  

About 500 CDs were sold each day