Let’s solve each addition problem step by step using the hundred chart method. We’ll break down how to add by moving on the chart — first adding tens, then ones.
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Problem 1: 34 + 27
Start at 34.
- Add 20 (two tens): Move down 2 rows → 34 → 44 → 54
- Now add 7 (seven ones): Move right 7 spaces from 54 → 55, 56, 57, 58, 59, 60, 61
✔ So, 34 + 27 =
61
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Problem 2: 55 + 39
Start at 55.
- Add 30 (three tens): Move down 3 rows → 55 → 65 → 75 → 85
- Now add 9 (nine ones): Move right 9 spaces from 85 → 86, 87, 88, 89, 90, 91, 92, 93, 94
✔ So, 55 + 39 =
94
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Problem 3: 53 + 28
Start at 53.
- Add 20 (two tens): Move down 2 rows → 53 → 63 → 73
- Now add 8 (eight ones): Move right 8 spaces from 73 → 74, 75, 76, 77, 78, 79, 80, 81
✔ So, 53 + 28 =
81
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Problem 4: 26 + 47
Start at 26.
- Add 40 (four tens): Move down 4 rows → 26 → 36 → 46 → 56 → 66
- Now add 7 (seven ones): Move right 7 spaces from 66 → 67, 68, 69, 70, 71, 72, 73
✔ So, 26 + 47 =
73
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Final Answer:
34 + 27 = 61
55 + 39 = 94
53 + 28 = 81
26 + 47 = 73
Parent Tip: Review the logic above to help your child master the concept of subtracting on a hundreds chart worksheet.
