This 'Mystery Numbers' worksheet challenges students to use place value clues to identify specific numbers from a grid, such as finding the number greater than 900 or the one with five tens.

Let’s go step by step to match each clue with the correct number from the grid:
The numbers available are: 915, 400, 50, 425, 875, 99

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Clue 1: A number greater than 900
Look at the numbers:
- 915 → yes, it’s greater than 900
- Others: 400, 50, 425, 875, 99 → all less than 900
✔ So, this is 915

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Clue 2: A number between 400 and 450
Check which numbers fall in that range (not including 400 or 450? Usually “between” means strictly inside, but sometimes includes endpoints — let’s check both).
Numbers:
- 400 → if “between” includes 400, then maybe. But usually in school math, “between 400 and 450” means >400 and <450.
- 425 → yes! 400 < 425 < 450
- 400 itself? Let’s see next clues — we’ll use 425 here because it fits perfectly.
✔ So, this is 425

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Clue 3: A number that has five tens
“Five tens” = 5 × 10 = 50
So look for a number where the tens digit is 5.
Break down the numbers:
- 915 → hundreds=9, tens=1, ones=5 → no
- 400 → tens=0 → no
- 50 → tens=5, ones=0 → YES!
- 425 → tens=2 → no
- 875 → tens=7 → no
- 99 → tens=9 → no
✔ So, this is 50

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Clue 4: A number with no tens or ones
That means the last two digits are zero → so it ends in “00”
Look:
- 400 → ends in 00 → tens=0, ones=0 → perfect
Others:
- 915 → ends in 15 → no
- 50 → ends in 50 → tens=5 → no
- 425 → ends in 25 → no
- 875 → ends in 75 → no
- 99 → ends in 99 → no
✔ So, this is 400

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Clue 5: A number that has 8 hundreds
That means the hundreds digit is 8 → so number is 8xx
Look:
- 875 → hundreds digit is 8 → yes
Others:
- 915 → 9
- 400 → 4
- 50 → 0
- 425 → 4
- 99 → 0
✔ So, this is 875

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Clue 6: A number closest to 100
We need to find which number is nearest to 100.
Calculate differences:
- 915 → |915 - 100| = 815
- 400 → 300
- 50 → |50 - 100| = 50
- 425 → 325
- 875 → 775
- 99 → |99 - 100| = 1 ← smallest difference!
✔ So, this is 99

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Now let’s list them in order as per the clues:

1. Greater than 900 → 915
2. Between 400 and 450 → 425
3. Has five tens → 50
4. No tens or ones → 400
5. Has 8 hundreds → 875
6. Closest to 100 → 99

All numbers used exactly once — perfect!

Final Answer:
915
425
50
400
875
99