G2-Lesson 5

G2-Lesson 5

What is 'addends'and 'sum'

• When we add, the number we add are called 'addends'. The answer is called the 'sum'

Multiple Choice

What are the addends in this question?

4 + 5 = 9

• 9

• 4

• 5

• 4 and 5

Multiple Select

What are the addends in this question?

5 + 6 = 11

• 11

• 5

• 6

• 11 and 5

Multiple Choice

6 + 4 = 10

In this question, 4 and 6 are ?

• sum

• numbers

• addends

• digits

Multiple Choice

What is the sum in 6 + 8 = 14

• 6 and 8

• 8 and 14

• 14

• 6

Multiple Choice

What is the sum in 9+ 8 = 17

• 17

• 9

• 8

• 9 and 8

Multiple Choice

7+ 2 = 9

in this problem, the sum is ?

• 7

• 2

• 7 and 2

• 9

1 + 2 = 3
2 + 1 = 3

• What do you notice about these two problems?
  

• The order of the addends is different, but the sum is the same.
  

• We call this an example of the 'commutative property of addition.'
  

Multiple Select

Select the examples that shows the 'commutative property of addition'.

• 1 + 5 = 5 + 1

• 2 + 2 = 3 + 1

• 5 + 7 = 7 + 5

• 7 + 6 = 6 + 7