This second medium worksheet reinforces writing related facts with new number sets through 16. Part A has nine fill-in-the-blank equations where first graders complete fact families like 6, 9, and 15, writing both addition orders and both subtraction equations. Part B is a matching exercise pairing addition facts with their subtraction partners, including trickier combinations like 7 + 9 = 16 with 16 - 9 = 7, sharpening flexibility with related facts.
Style:
Fact Families: Addition & Subtraction
Part A: Complete the Fact Family
Write the missing number to complete each equation.
1. 6 + 9 = 15
2. 9 + 6 = 15
3. 15 - 6 = 9
4. 15 - 9 = 6
5. 8 + 9 = 17
6. 9 + 8 = 17
7. 17 - 8 = 9
8. 17 - 9 = 8
9. If 7 + 9 = 16, then 16 - 7 = 9.
Part B: Match the Fact Family Partners
Draw a line from each addition fact to its subtraction partner.
1. Match each addition fact to its subtraction partner.
5 + 8 = 13
→ 13 - 8 = 5
11 - 5 = 6
7 + 9 = 16
→ 16 - 9 = 7
12 - 4 = 8
6 + 5 = 11
→ 11 - 5 = 6
16 - 9 = 7
8 + 4 = 12
→ 12 - 4 = 8
13 - 8 = 5
Fact Families: Addition & Subtraction
★ Part A: Complete the Fact Family
Write the missing number to complete each equation.
1) 6 + 9 = 15
2) 9 + 6 = 15
3) 15 - 6 = 9
4) 15 - 9 = 6
5) 8 + 9 = 17
6) 9 + 8 = 17
7) 17 - 8 = 9
8) 17 - 9 = 8
9) If 7 + 9 = 16, then 16 - 7 = 9.
★ Part B: Match the Fact Family Partners
Draw a line from each addition fact to its subtraction partner.
1) Match each addition fact to its subtraction partner.
5 + 8 = 13
→ 13 - 8 = 5
11 - 5 = 6
7 + 9 = 16
→ 16 - 9 = 7
12 - 4 = 8
6 + 5 = 11
→ 11 - 5 = 6
16 - 9 = 7
8 + 4 = 12
→ 12 - 4 = 8
13 - 8 = 5
Ready to Practice?
For Part A, write the missing number in each equation. For Part B, match each addition equation to its subtraction partner.
10 Questions
15-20 minutes
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