Let's solve each addition problem in the image step by step. The worksheet is titled
"Back to School Addition up to 20", and it includes visual representations (like tally marks, objects, and number lines) to help with addition.
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🔹 Left Column: Visual Addition Problems
1.
Tally Marks:
- First group: 10 tally marks (5 groups of 2) → 10
- Second group: 6 tally marks → 6
-
10 + 6 = 16 ✔
2.
Blue Backpacks:
- First group: 7 backpacks
- Second group: 4 backpacks
-
7 + 4 = 11 ✔
3.
Red Apples:
- First group: 8 apples
- Second group: 4 apples
-
8 + 4 = 12 ✔
4.
Green Sticks:
- First group: 10 sticks
- Second group: 9 sticks
-
10 + 9 = 19 ✔
5.
Purple Diamonds:
- First group: 10 diamonds
- Second group: 5 diamonds
-
10 + 5 = 15 ✔
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🔹 Middle Column: Number Addition Problems
1.
12 + 8 = ?
- 12 + 8 =
20 ✔
2.
13 + 2 = ?
- 13 + 2 =
15 ✔
3.
7 + 9 = ?
- 7 + 9 =
16 ✔
4.
11 + 6 = ?
- 11 + 6 =
17 ✔
5.
9 + 9 = ?
- 9 + 9 =
18 ✔
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🔹 Right Column: Missing Addend Problems
1.
Tally Marks + ? = 18
- Tally marks show 10
- So, 10 + ? = 18 → ? =
8 ✔
- Answer:
10 + 8 = 18
2.
? + 12 = 20
- ? = 20 – 12 =
8 ✔
- Answer:
8 + 12 = 20
3.
6 + ? = 20
- ? = 20 – 6 =
14 ✔
- Answer:
6 + 14 = 20
4.
Students + 6 = ?
- Students shown: 11
- 11 + 6 =
17 ✔
5.
? + 9 = 17
- ? = 17 – 9 =
8 ✔
- Answer:
8 + 9 = 17
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✔ Final Answers:
#### Left Column:
- 10 + 6 =
16
- 7 + 4 =
11
- 8 + 4 =
12
- 10 + 9 =
19
- 10 + 5 =
15
#### Middle Column:
- 12 + 8 =
20
- 13 + 2 =
15
- 7 + 9 =
16
- 11 + 6 =
17
- 9 + 9 =
18
#### Right Column:
- 10 +
8 = 18
-
8 + 12 = 20
- 6 +
14 = 20
- 11 + 6 =
17
-
8 + 9 = 17
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📌 Summary:
All problems involve basic addition up to 20, using visual aids or number facts. The key skills are:
- Counting objects or tally marks
- Adding two numbers
- Finding missing addends using subtraction
✔ All answers are correct and within the range of 20 as required.
Let me know if you'd like a printable version or explanation for any specific problem!
Parent Tip: Review the logic above to help your child master the concept of addition worksheet to 20 with pictures.
