Let's solve each part of the "Ordering Numbers" worksheet step by step. The goal is to
rewrite each list of numbers in order from least to greatest.
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a. 115, 121, 119, 125
- Compare the numbers:
- 115 is the smallest.
- Next: 119 (since 119 > 115)
- Then: 121
- Largest: 125
✔ Answer: 115, 119, 121, 125
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b. 423, 432, 342, 344
- Look at the hundreds digit first:
- 342 and 344 start with 3 → smaller than those starting with 4.
- So, 342 and 344 come before 423 and 432.
- Now compare 342 and 344:
- 342 < 344
- Now compare 423 and 432:
- 423 < 432
✔ Answer: 342, 344, 423, 432
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c. 757, 755, 577, 79
- First, look at the number of digits:
- 79 has only two digits → smallest
- Now three-digit numbers:
- 577 starts with 5 → smaller than 7xx numbers
- 755 and 757 both start with 7
- Compare tens: both have 5
- Compare ones: 55 vs 57 → 55 < 57 → so 755 < 757
So order: 79, 577, 755, 757
✔ Answer: 79, 577, 755, 757
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d. 210, 340, 304, 200
- Compare hundreds digits:
- 200 and 210 → both start with 2
- 304 and 340 → both start with 3 → larger than 2xx
- Among 200 and 210:
- 200 < 210
- Among 304 and 340:
- 304 < 340
So order: 200, 210, 304, 340
✔ Answer: 200, 210, 304, 340
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e. 160, 60, 163, 130
- 60 is the only two-digit number → smallest
- Now three-digit numbers:
- 130, 160, 163
- All start with 1 → compare tens:
- 130 → tens digit 3
- 160 and 163 → tens digit 6 → larger than 3
- So 130 comes next
- Then 160 vs 163:
- 160 < 163
So order: 60, 130, 160, 163
✔ Answer: 60, 130, 160, 163
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f. 445, 145, 545, 454
- Hundreds digit:
- 145 → 1 → smallest
- 445 and 454 → 4 → middle
- 545 → 5 → largest
- Among 445 and 454:
- Both start with 4
- Tens digit: 4 vs 5 → 445 < 454
- So: 145, 445, 454, 545
✔ Answer: 145, 445, 454, 545
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✔ Final Answers:
a.
115, 119, 121, 125
b.
342, 344, 423, 432
c.
79, 577, 755, 757
d.
200, 210, 304, 340
e.
60, 130, 160, 163
f.
145, 445, 454, 545
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Parent Tip: Review the logic above to help your child master the concept of ordering 3 digit numbers worksheet.
