Sensational Subtraction

List 3 prime numbers: 2, 3, 5

List the factors of 24: 1, 2, 3, 4, 6, 8, 12 and 24

List the common factors of 24 and 48: 2, 2, 2, 3

Mr Burt has $1000 in the maths budget at the start of the year.

He starts by purchasing 650 maths books, at $0.30 each. His total spend is: 195

How much does he have left? 805

Next he spends $167.70 on rulers and protractors

How much is left now? 637.3

Then he purchases 5 text books, which cost $26.50 each. The 5 textbooks cost: 132.5

How much does he have left? 504.8

Finally he spends $6.70 on stickers.

How much does he have left? 498.1

4 – 0.768 = 3.23200