Standard and Expanded Form Numbers with Sea Turtle - ArgoPrep - Free Printable

Let's solve the worksheet step by step.

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Part 1: Write the number in standard form

We need to add the numbers together to get the standard (whole) number.

#### Left Box:
1. 800 + 90 + 6 =
800 + 90 = 890
890 + 6 = 896

2. 600 + 20 + 3 =
600 + 20 = 620
620 + 3 = 623

3. 700 + 50 + 9 =
700 + 50 = 750
750 + 9 = 759

4. 900 + 80 + 5 =
900 + 80 = 980
980 + 5 = 985

5. 400 + 40 + 7 =
400 + 40 = 440
440 + 7 = 447

6. 100 + 10 + 2 =
100 + 10 = 110
110 + 2 = 112

#### Right Box:
7. 400 + 50 + 4 =
400 + 50 = 450
450 + 4 = 454

8. 900 + 60 + 7 =
900 + 60 = 960
960 + 7 = 967

9. 500 + 40 + 3 =
500 + 40 = 540
540 + 3 = 543

10. 300 + 10 + 1 =
300 + 10 = 310
310 + 1 = 311

11. 600 + 20 + 7 =
600 + 20 = 620
620 + 7 = 627

12. 300 + 90 + 6 =
300 + 90 = 390
390 + 6 = 396

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Part 2: Write the expanded form of each number

We break each number into hundreds, tens, and ones.

#### Left Box:
1. 529 = 500 + 20 + 9
- 5 hundreds = 500
- 2 tens = 20
- 9 ones = 9

2. 864 = 800 + 60 + 4
- 8 hundreds = 800
- 6 tens = 60
- 4 ones = 4

3. 174 = 100 + 70 + 4
- 1 hundred = 100
- 7 tens = 70
- 4 ones = 4

4. 375 = 300 + 70 + 5
- 3 hundreds = 300
- 7 tens = 70
- 5 ones = 5

5. 289 = 200 + 80 + 9
- 2 hundreds = 200
- 8 tens = 80
- 9 ones = 9

#### Right Box:
6. 856 = 800 + 50 + 6
- 8 hundreds = 800
- 5 tens = 50
- 6 ones = 6

7. 453 = 400 + 50 + 3
- 4 hundreds = 400
- 5 tens = 50
- 3 ones = 3

8. 368 = 300 + 60 + 8
- 3 hundreds = 300
- 6 tens = 60
- 8 ones = 8

9. 734 = 700 + 30 + 4
- 7 hundreds = 700
- 3 tens = 30
- 4 ones = 4

10. 932 = 900 + 30 + 2
- 9 hundreds = 900
- 3 tens = 30
- 2 ones = 2

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✔ Final Answers:

#### Write the number in standard form:
- 800 + 90 + 6 = 896
- 600 + 20 + 3 = 623
- 700 + 50 + 9 = 759
- 900 + 80 + 5 = 985
- 400 + 40 + 7 = 447
- 100 + 10 + 2 = 112
- 400 + 50 + 4 = 454
- 900 + 60 + 7 = 967
- 500 + 40 + 3 = 543
- 300 + 10 + 1 = 311
- 600 + 20 + 7 = 627
- 300 + 90 + 6 = 396

#### Write the expanded form of each number:
- 529 = 500 + 20 + 9
- 864 = 800 + 60 + 4
- 174 = 100 + 70 + 4
- 375 = 300 + 70 + 5
- 289 = 200 + 80 + 9
- 856 = 800 + 50 + 6
- 453 = 400 + 50 + 3
- 368 = 300 + 60 + 8
- 734 = 700 + 30 + 4
- 932 = 900 + 30 + 2

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✔ This helps students understand place value: hundreds, tens, and ones. Expanding numbers shows how each digit contributes to the total value.