Vocabulary
Using doubles
Fact Families (related sentences)
Connecting addition and subtraction
Find the difference!
100
What is the meaning of the word DIFFERENCE?
the answer to a subtraction problem
100
What doubles fact will help you solve 4-2?
2+2=4
100
Look at the following problems: 3+2=5 5+3=8 Are these 2 sentences related?
No, not all the numbers are the same in both sentences.
100
6-3=? Which addition fact could help you solve this problem?
3+3=6
100
9-0=?
9
200
Give me an example of a subtraction sentence.
bigger number - smaller number = difference
200
What is the subtraction problem that the doubles fact 8+8=16 would help you solve?
16-8=8
200
Which subtraction fact is related to 7+4=11? a. 7-4=3 b. 11-7=4 c. 12-12=0
b. 11-7=4
200
Can addition help you solve subtraction problems?
Yes.
200
7-2=?
5
300
Stana has 3 FEWER birds than Logan G. Fewer would mean you add or subtract to find the answer?
Subtract
300
Would 5+5=10 help you solve the problem 11-9?
No.
300
Which sentence does not fit with the others? a. 3+8=11 b. 8+3=11 c. 11-3=8 d. 11+3=14
d. 11+3=14
300
Does 4+6=10 help you solve the problem 10-6=? If no, what would?
Yes, it does.
300
14-4=?
10
400
4-1=3, Which number is the difference?
3
400
What is 20-10? What doubles fact helped you solve this problem?
10+10=20
400
Give 2 related sentences (1 addition and 1 subtraction) for the number 1,4,5.
1+4=5 4+1=5 5-4=1 5-1=4
400
What addition fact helps you solve 12-9?
9+3=12
400
18-9=?
9
500
What is a fact family? (Related number sentences)
Numbers that are all the same in every problem.
500
How does using doubles facts help you solve a subtraction problem?
If you know it's a double, then you already know the answer.
500
Tell me a related addition sentence and subtraction sentence for the numbers 4,8,12.
4+8=12 8+4=12 12-8=4 12-4=8
500
What addition fact would help you solve the problem 18-7?
11+7=18
500
13-7=?
6
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