The most challenging sheet applies fact family reasoning to numbers up through 20 with word-problem style thinking. Part A includes four multiple-choice questions, including a NOT-in-the-family question and a short story about Liam using 9 + 7 = 16 to write a related fact. Part B presents five missing-number challenges with doubles and larger sums, asking first graders to use known addition facts to solve trickier subtraction equations independently.
Style:
Fact Families: Addition & Subtraction
Part A: Multiple Choice
Circle the correct answer for each question.
1. Which equation is NOT in the fact family for 7, 8, and 15?
A) 7 + 8 = 15
B) 15 - 7 = 8
C) 8 + 7 = 15
D) 15 - 6 = 9
2. How many equations are in every fact family with three different numbers?
A) 2
B) 3
C) 4
D) 5
3. Liam knows 9 + 7 = 16. Which equation can he write from the same fact family?
A) 16 - 3 = 13
B) 16 - 9 = 7
C) 9 + 6 = 15
D) 16 + 7 = 23
4. Which fact family includes the equation 20 - 11 = 9?
A) 9, 10, 19
B) 9, 11, 20
C) 11, 9, 21
D) 9, 12, 20
Part B: Fill in the Missing Number
Use fact family relationships to find each missing number.
1. If 9 + 9 = 18, then 18 - 9 = 9.
2. 12 + 8 = 20, so 20 - 8 = 12.
3. The fact family for 7, 9, and 16 uses 16 - 7 = 9.
4. 19 - 9 = 10, so 10 + 9 = 19.
5. If 6 + 14 = 20, then 20 - 14 = 6.
Fact Families: Addition & Subtraction
★ Part A: Multiple Choice
Circle the correct answer for each question.
1. Which equation is NOT in the fact family for 7, 8, and 15?
A) 7 + 8 = 15
B) 15 - 7 = 8
C) 8 + 7 = 15
D) 15 - 6 = 9
2. How many equations are in every fact family with three different numbers?
A) 2
B) 3
C) 4
D) 5
3. Liam knows 9 + 7 = 16. Which equation can he write from the same fact family?
A) 16 - 3 = 13
B) 16 - 9 = 7
C) 9 + 6 = 15
D) 16 + 7 = 23
4. Which fact family includes the equation 20 - 11 = 9?
A) 9, 10, 19
B) 9, 11, 20
C) 11, 9, 21
D) 9, 12, 20
★ Part B: Fill in the Missing Number
Use fact family relationships to find each missing number.
1) If 9 + 9 = 18, then 18 - 9 = 9.
2) 12 + 8 = 20, so 20 - 8 = 12.
3) The fact family for 7, 9, and 16 uses 16 - 7 = 9.
4) 19 - 9 = 10, so 10 + 9 = 19.
5) If 6 + 14 = 20, then 20 - 14 = 6.
Ready to Practice?
For Part A, circle the correct answer. For Part B, write the missing number on the line.
9 Questions
15-20 minutes
Auto-graded
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