Estimating Products worksheet for rounding whole numbers to the nearest hundred and calculating approximate products.

Let’s solve each problem step by step. The instruction is:
Round each whole number to the nearest hundred, then multiply the two rounded numbers together.

We’ll go one by one.

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Problem 1 (already done as example):
452 → rounds to 500
342 → rounds to 300
500 × 300 = 150,000 ✔

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Problem 2:
561 → rounds to 600 (since 561 is closer to 600 than 500)
231 → rounds to 200 (since 231 is closer to 200 than 300)
600 × 200 = 120,000

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Problem 3:
712 → rounds to 700 (closer to 700 than 800)
512 → rounds to 500 (closer to 500 than 600)
700 × 500 = 350,000

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Problem 4:
786 → rounds to 800 (closer to 800 than 700)
312 → rounds to 300 (closer to 300 than 400)
800 × 300 = 240,000

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Problem 5:
872 → rounds to 900 (closer to 900 than 800)
412 → rounds to 400 (closer to 400 than 500)
900 × 400 = 360,000

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Problem 6:
569 → rounds to 600 (closer to 600 than 500)
421 → rounds to 400 (closer to 400 than 500)
600 × 400 = 240,000

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Problem 7:
915 → rounds to 900 (closer to 900 than 1000? Wait — 915 is between 900 and 1000. Since 915 - 900 = 15, and 1000 - 915 = 85 → so yes, closer to 900)
Actually, wait — standard rounding rule: if it’s 5 or more in the tens place, round up.
915 → look at tens digit: 1 → which is less than 5 → so round down to 900
Wait — no! Actually, for rounding to nearest hundred:
Look at the tens digit. If it’s 5 or greater, round up; if less than 5, round down.

So:
- 915 → tens digit is 1 → less than 5 → round down → 900
But actually, let me double-check:
The rule is: Look at the digit in the tens place when rounding to hundreds.

Example:
To round 915 to nearest hundred:
Hundreds digit is 9 (so we’re deciding between 900 and 1000).
Tens digit is 1 → since 1 < 5 → round down → 900

Similarly, 321 → tens digit is 2 → less than 5 → round down → 300

So:
915 → 900
321 → 300
900 × 300 = 270,000

Wait — but some might think 915 is close to 900, yes. Correct.

BUT — hold on! Let me check again:
Standard rounding to nearest hundred:

Rule: Look at the last two digits (the part after the hundreds). If that number is 50 or more, round up. If less than 50, round down.

So:
- 915 → last two digits: 15 → less than 50 → round down → 900
- 321 → last two digits: 21 → less than 50 → round down → 300

Yes, correct.

So 900 × 300 = 270,000

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Problem 8:
581 → last two digits: 81 → ≥ 50 → round up → 600
316 → last two digits: 16 → < 50 → round down → 300
600 × 300 = 180,000

Wait — 316: tens digit is 1 → less than 5 → round down → 300. Yes.

But let me confirm all with consistent method:

Rounding to nearest hundred:

- Take the number.
- Look at the tens digit (or the number formed by tens and units).
- If that value is 50 or more, round up the hundreds digit by 1.
- If less than 50, keep the hundreds digit same, set rest to zero.

So:

Problem 2:
561 → tens+units = 61 ≥ 50 → round up → 600
231 → 31 < 50 → round down → 200 → 600×200=120,000 ✔️

Problem 3:
712 → 12 < 50 → 700
512 → 12 < 50 → 500 → 700×500=350,000 ✔️

Problem 4:
786 → 86 ≥ 50 → 800
312 → 12 < 50 → 300 → 800×300=240,000 ✔️

Problem 5:
872 → 72 ≥ 50 → 900
412 → 12 < 50 → 400 → 900×400=360,000 ✔️

Problem 6:
569 → 69 ≥ 50 → 600
421 → 21 < 50 → 400 → 600×400=240,000 ✔️

Problem 7:
915 → 15 < 50 → 900
321 → 21 < 50 → 300 → 900×300=270,000 ✔️

Problem 8:
581 → 81 ≥ 50 → 600
316 → 16 < 50 → 300 → 600×300=180,000 ✔️

All checks out.

Now, let’s write the answers clearly for each box.

Final Answer:

1. 500, 300, 150000 (given)

2. 600, 200, 120000

3. 700, 500, 350000

4. 800, 300, 240000

5. 900, 400, 360000

6. 600, 400, 240000

7. 900, 300, 270000

8. 600, 300, 180000

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Final Answer:
2. 600, 200, 120000
3. 700, 500, 350000
4. 800, 300, 240000
5. 900, 400, 360000
6. 600, 400, 240000
7. 900, 300, 270000
8. 600, 300, 180000