Sensational subtraction.

  Sensational Subtraction

We are learning to solve subtraction problems using decimal numbers.

 

List 3  prime numbers: 2 3 5.

 

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

 

List the common factors of 24 and 48:

2

 

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:  320

 

 How much does he have left? 680

 

Next he spends $167.70 on rulers and protractors

 

How much is left now? 512.30.

 

Then he purchases 5 text books, which cost $26.50 each. The 5 textbooks cost: 132.50

 

 How much does he have left?  409.80

 

Finally he spends $6.70 on stickers. 

 

 How much does he have left? 403.20

 

4 – 0.768 =3.3232

 

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