**Number Sentences**

Write stories about addition, subtraction, multiplication and division. An example of a number story for division is below.

● variation of order and grouping of addition (commutative and associative property) to facilitate computations; for example, 3 + 5 + 7 + 5= 3 + 7 + 5 + 5 = 10 +10 = 20

● calculations using notation such as ‘3 + 5 − 2 =’