Question

Change the order or grouping to find the sum. Explain how you used properties to find the sum. 63 + 86 + 77

Answer 1

You can't change the sum by changing the grouping. Any way you cut it, you will always get 226, as you only have addition operations, and the commutative property [a+(b+c)=(a+b)+c] means that the sum will always be the same.

Answer 2

63+86+77=226

Explanation:

Given : Expression 63+86+77

To find : Change the order or grouping to find the sum. Explain how you used properties to find the sum ?

Solution :

Adding the term as given,

6 3

8 6

+7 7

--------

226

If we regroup or change the order there will be no effect on the addition the result remain same.

For example -

6 3

7 7

+8 6

--------

226