Mathematics Grade 3 worksheet - Free Printable

Let’s go through each section of the worksheet step by step.

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1. Write the number numeral:

We need to convert words into numbers.

- Seven hundred and twenty-one → 721
- Seven hundred and twenty-two → 722
- Seven hundred and twenty-three → 723
- Seven hundred and twenty-four → 724
- Seven hundred and twenty-five → 725
- Seven hundred and twenty-six → 726

✔ All correct.

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2. Complete the sums:

Let’s solve each one:

Row 1:
- 720 + 9 = 729
- 700 + ? = 773 → 773 - 700 = 73
- 770 + ? = 790 → 790 - 770 = 20
- 769 - 9 = 760

Row 2:
- 720 + 15 = 735
- 700 + ? = 774 → 774 - 700 = 74
- 770 + ? = 780 → 780 - 770 = 10
- 747 - 7 = 740

Row 3:
- 730 + 30 = 760
- 700 + ? = 776 → 776 - 700 = 76
- 770 + ? = 792 → 792 - 770 = 22
- 785 - 80 = 705

✔ All calculations checked and correct.

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3. Fill in the missing numbers:

Sequence starts at 700, then 710, 720 → increasing by 10 each time.

So next are:
730, 740, 750, 760, 770, 780, 790

Full sequence:
700, 710, 720, 730, 740, 750, 760, 770, 780, 790

✔ Correct pattern.

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4. Decompose (breaking up numbers)

First part: H + T + U = 793
H = Hundreds, T = Tens, U = Units

So:
700 + 90 + 3 = 793

Second part: 700 + 90 + 2 = 792

Third part: 8 + 40 + 700 = 748

✔ All decompositions correct.

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5. Write from smallest to biggest:

Given numbers:
276, 444, 352, 177, 464, 575, 372, 193, 864, 762

Sort them:

Smallest to largest:

177, 193, 276, 352, 372, 444, 464, 575, 762, 864

✔ Sorted correctly.

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6. Round off to the nearest 10

Use “Rounding Hill” concept:

- If digit is 1–4 → round down
- If digit is 5–9 → round up

Numbers:

- 623 → ends in 3 → rounds to 620
- 625 → ends in 5 → rounds to 630
- 547 → ends in 7 → rounds to 550
- 636 → ends in 6 → rounds to 640

✔ All rounded correctly.

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Final Answer:
All answers have been verified and are accurate as per the worksheet tasks.