Fact Triangles
What number is missing from this fact triangle?
5, 7, ?
12
Doug is playing Salute!
The dealer says 10.
His partner has a 5 on his forehead.
What number does Doug have?
5
Solve.
14-_____=5
9
Find the Rule.
In Out
6 12
7 13
5 11
3 9
+6
What "make a ten" equation could you use as a helper fact to solve 7+6?
7+3 or 4+6
What number is missing from the fact triangle?
8, 2, ?
Bob is playing Salute!
The dealer says 14.
His partner has a 7 on his forehead.
What number does Bob have?
7
Solve
____-9=1019
Find the Rule.
In Out
14 7
15 8
20 13
12 5
-7
What "make a ten" equation could you use as a helper fact to solve 4+8?
4+6 or 8+2
Write the Fact family.
7, 4, 11.
____+____=____+____=
____-_____=
____-_____=
7+4=11
4+7=11
11-7=4
11-4=7
Brandi is playing Salute!
The dealer says 14.
Her partner has a 8 on his forehead.
What number does Brandi have?
How do you know?
6
Answers will vary
Solve.
15-4=
16-7=
11, 9
Find the Rule.
In Out
2 9
0 7
10 17
7 14
+7
What "make a ten" equation could you use as a helper fact to solve 7+4?
Explain.
7+3
You could take three from 4 to make a ten and then have 1 left over. 10+1=11
Write the Fact family.
6, 8, 14.
____+____=
____+____=
____-_____=
____-_____=
6+8=14
8+6=14
14-6=8
14-8=6
Kasey is playing Salute!
The dealer says 12.
Her partner has a 8 on his forehead.
What number does Kasey have?
How do you know?
4
Answers will Vary
Vicky is playing subtraction top it.
She takes a 18 and a 6.
Write the subtraction fact.
18-6=12
Fill in the table
Rule: +4
In Out
8 ____
___ 13
5 9
6 ___
12, 9, 10
What "make a ten" equation could you use as a helper fact to solve 8+6?
Explain.
8+2 or 4+6
You can take 2 from 6 to make 8+2. You would have 4 left over. 10+4=14.
Write the Fact family.
12, 11, 23.
____+____=
____+____=
____-_____=
____-_____=
11+12=23
12+11=23
23-11=12
23-12=11
Adam is playing Salute!
The dealer says 9.
His partner has a 5 on his forehead.
What number does Adam have?
How do you know?
4
Answers will vary
Stacy is playing subtraction top it.
She takes a 13 and a 7.
Write the subtraction fact.
13-7= 6
Fill in the table
Rule: - 6
In Out
8 ____
___ 13
9 3
6 ___
2, 19, 0
What "make a ten" equation could you use as a helper fact to solve 9+3?
Explain.
9+1
You can take 1 from 3 to make 9+1. You would have 2 left over. 10+2=12.