The image shows a math worksheet focused on
subtraction from 30 using a number line. The goal is to solve subtraction problems by visualizing the process on a number line.
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🔍 Problem:
We are given several subtraction problems:
1. $ 30 - 4 = ? $
2. $ 20 - 4 = ? $
3. $ 25 - 4 = ? $
4. $ 15 - 4 = ? $
We are to use the
number line (which goes from 0 to 30) to find the answers.
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✔ How to Use the Number Line for Subtraction:
To subtract a number, you
start at the starting number and
move left by the amount you're subtracting.
For example:
- $ 28 - 4 = 24 $: Start at 28, move 4 steps left → land on 24.
Let’s solve each problem step by step.
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1. $ 30 - 4 = ? $
- Start at
30
- Move
4 steps to the left:
30 → 29 → 28 → 27 → 26
- Final answer:
26
✔ $ 30 - 4 = 26 $
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2. $ 20 - 4 = ? $
- Start at
20
- Move
4 steps to the left:
20 → 19 → 18 → 17 → 16
- Final answer:
16
✔ $ 20 - 4 = 16 $
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3. $ 25 - 4 = ? $
- Start at
25
- Move
4 steps to the left:
25 → 24 → 23 → 22 → 21
- Final answer:
21
✔ $ 25 - 4 = 21 $
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4. $ 15 - 4 = ? $
- Start at
15
- Move
4 steps to the left:
15 → 14 → 13 → 12 → 11
- Final answer:
11
✔ $ 15 - 4 = 11 $
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📝 Final Answers:
- $ 30 - 4 = \boxed{26} $
- $ 20 - 4 = \boxed{16} $
- $ 25 - 4 = \boxed{21} $
- $ 15 - 4 = \boxed{11} $
You can now fill these answers in the blanks on the worksheet.
Let me know if you'd like a visual representation of the jumps on the number line!
Parent Tip: Review the logic above to help your child master the concept of subtraction worksheet to 30.
