Maths Strategy

Strategy 5 - Regroup and Combine Compatible Numbers

On the first day at school we used 56 litres of water, On the second day we used 89 litres of water and on the third day we used 14 litres of water. How much water have we used over the last three days?

Equation:/.;

56+89+14

= (56+14)+89

=70+89

=159

I used this strategy because its simple to calculate. We have been learning all the different strategies in maths.