Number system -Grade 3 Assessment worksheet - Free Printable

Let's solve each question step by step from the Codeyoung Grade 3 Number System Assessment.

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I. Write the after number of the following.

This means we need to find the number that comes immediately after the given number.

1. 456 → The next number is 457
2. 509 → The next number is 510

✔ Answers:
1. 457
2. 510

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II. Write the missing numbers.

We are given two numbers with a gap in between, and we need to find the missing number(s) in the sequence.

3. 789 ________ 791
- The sequence is increasing by 1.
- So, the number between 789 and 791 is 790

4. 909 ________ 911
- Again, increasing by 1.
- So, the number between 909 and 911 is 910

✔ Answers:
3. 790
4. 910

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III. What comes before?

We need to find the number that comes just before the given number.

5. ________, 810
- The number before 810 is 809

6. ________, 1000
- The number before 1000 is 999

✔ Answers:
5. 809
6. 999

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IV. Compare the numbers using <, > or =

We compare the values on both sides.

7. 678 + 3 ____ 678
- 678 + 3 = 681
- 681 > 678
→ So, >

8. 123 ____ 321
- 123 is less than 321
→ So, <

9. 676 ____ 576 + 100
- 576 + 100 = 676
- So, 676 = 676
→ So, =

✔ Answers:
7. >
8. <
9. =

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V. Write in words

10. 8905
- Break it down:
- 8000 → eight thousand
- 900 → nine hundred
- 5 → five
- Combine: Eight thousand nine hundred five

✔ Answer: Eight thousand nine hundred five

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✔ Final Answers:

1. 457
2. 510
3. 790
4. 910
5. 809
6. 999
7. >
8. <
9. =
10. Eight thousand nine hundred five

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