Sensational Subtraction

 Sensational Subtraction

We are learning to solve subtraction problems using decimal numbers.

List 3 prime numbers:

1,3,7

List the factors of 24:

1,2,3,4,6,8,12,24

List the common factors of 24 and 48:

1,2,4,6,8,12,24

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: 

$495

How much does he have left?

$505

Next he spends $167.70 on rulers and protractors

How much is left now?

$357.30

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

$132.50

How much does he have left?

$224.80

Finally he spends $6.70 on stickers.

How much does he have left?

$218.10

4 - 0.768 =3.342