Here's the completed worksheet with all missing subtraction facts solved, along with a clear explanation for each type of problem.
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✔ SOLUTIONS:
1) 11 - 3 = _8_
→ 11 minus 3 is 8. (Count back 3 from 11: 10, 9, 8)
2) 9 - 6 = _3_
→ 9 minus 6 is 3. (6 + 3 = 9)
3) _7_ - 2 = 5
→ What number minus 2 equals 5? → 5 + 2 = 7
4) _10_ - 1 = 9
→ What number minus 1 equals 9? → 9 + 1 = 10
5) 6 - _3_ = 3
→ 6 minus what equals 3? → 6 - 3 = 3 → Answer is 3
6) 8 - _2_ = 6
→ 8 minus what equals 6? → 8 - 2 = 6 → Answer is 2
7) 10 - _5_ = 5
→ 10 minus what equals 5? → 10 - 5 = 5 → Answer is 5
8) _7_ - 2 = 5
→ Same as #3: 5 + 2 = 7
9) _5_ - 4 = 1
→ What minus 4 equals 1? → 1 + 4 = 5
10) 11 - 5 = _6_
→ 11 minus 5 is 6. (5 + 6 = 11)
11) 10 - 7 = _3_
→ 10 minus 7 is 3. (7 + 3 = 10)
12) _8_ - 3 = 5
→ What minus 3 equals 5? → 5 + 3 = 8
13) 11 - 9 = _2_
→ 11 minus 9 is 2. (9 + 2 = 11)
14) 12 - 5 = _7_
→ 12 minus 5 is 7. (5 + 7 = 12)
15) _11_ - 3 = 8
→ What minus 3 equals 8? → 8 + 3 = 11
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16) 8 - _7_ = 1
→ 8 minus what equals 1? → 8 - 7 = 1 → Answer is 7
17) 9 - _5_ = 4
→ 9 minus what equals 4? → 9 - 5 = 4 → Answer is 5
18) _7_ - 5 = 2
→ What minus 5 equals 2? → 2 + 5 = 7
19) 9 - 7 = _2_
→ 9 minus 7 is 2. (7 + 2 = 9)
20) 11 - 7 = _4_
→ 11 minus 7 is 4. (7 + 4 = 11)
21) _10_ - 5 = 5
→ What minus 5 equals 5? → 5 + 5 = 10
22) _12_ - 4 = 8
→ What minus 4 equals 8? → 8 + 4 = 12
23) 12 - _2_ = 10
→ 12 minus what equals 10? → 12 - 2 = 10 → Answer is 2
24) 9 - _8_ = 1
→ 9 minus what equals 1? → 9 - 8 = 1 → Answer is 8
25) _11_ - 4 = 7
→ What minus 4 equals 7? → 7 + 4 = 11
26) 12 - 9 = _3_
→ 12 minus 9 is 3. (9 + 3 = 12)
27) 12 - _8_ = 4
→ 12 minus what equals 4? → 12 - 8 = 4 → Answer is 8
28) _11_ - 8 = 3
→ What minus 8 equals 3? → 3 + 8 = 11
29) _11_ - 5 = 6
→ What minus 5 equals 6? → 6 + 5 = 11
30) 9 - _9_ = 0
→ 9 minus what equals 0? → 9 - 9 = 0 → Answer is 9
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🧠 HOW TO SOLVE THESE TYPES OF PROBLEMS:
There are
three types of missing subtraction facts:
#### 🔹 Type 1: Missing Difference (e.g., 11 - 3 = ___)
- Just do the subtraction.
- Example: 11 - 3 → Count down 3 from 11 → 10, 9, 8 → Answer:
8
#### 🔹 Type 2: Missing Subtrahend (e.g., 8 - ___ = 6)
- Think: “What number do I subtract from 8 to get 6?”
- Use addition: 6 + ? = 8 → ? = 2 → Answer:
2
#### 🔹 Type 3: Missing Minuend (e.g., ___ - 2 = 5)
- Think: “What number minus 2 gives me 5?”
- Use addition: 5 + 2 = 7 → Answer:
7
> 💡
Tip: Always check your answer by plugging it back in!
> Example: For #3: 7 - 2 = 5 → Correct!
> For #16: 8 - 7 = 1 → Correct!
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✔ Final Answer Key:
1) 8
2) 3
3) 7
4) 10
5) 3
6) 2
7) 5
8) 7
9) 5
10) 6
11) 3
12) 8
13) 2
14) 7
15) 11
16) 7
17) 5
18) 7
19) 2
20) 4
21) 10
22) 12
23) 2
24) 8
25) 11
26) 3
27) 8
28) 11
29) 11
30) 9
You’re all set! Great job practicing your subtraction facts to 12. 🎉
Parent Tip: Review the logic above to help your child master the concept of worksheet in subtraction for grade 1.
