Vocab
What does it mean to add?
to put 2 numbers together to find the whole
The answer to a subtraction problem is call the
difference
3+8
11
What number is missing to make the number sentence correct?
3 + 6 + + __ = 11
2
What is an addend?
The two numbers you add together
When you take away, take apart, separate, or find the difference between two sets, you
subtract
What is another way to write 6 + 4 = 10?
4 + 6 = 10
Find the missing addend?
5 + ___ = 6
1
count back on a number line
The answer tp am addition sentence is called the
sum
5 + 5 =
10
Add. 3 + 6 =
9
What does it mean to Count on?
To use a number line to count forward
Addition and subtraction sentences that sue the same three numbers can be called
fact family or related facts
What doubles fact can help you solve 9 + 8 = 17?
8 + 8 = 16
Which addition fact helps solve 13- 6?
6 + 6 = 12