Workbook Detail
Number Detective Hard — Set 9
Use the clues to find the mystery number.
Show answer
Answer: 47
- Clues
- I am greater than 44.
- I am less than 51.
- If you double me, you get 94.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 16
- Clues
- I am an even number.
- I am less than 22.
- Half of me is 8.
- AnswerRange
- 10
- 99
- Visual
- Type: inline-svgSvg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#3E721D" d="M35 26c0 2.209-1.791 4-4 4H5c-2.209 0-4-1.791-4-4V6.313C1 4.104 6.791 0 9 0h20.625C32.719 0 35 2.312 35 5.375V26z"/><path fill="#CCD6DD" d="M33 30c0 2.209-1.791 4-4 4H7c-2.209 0-4-1.791-4-4V6c0-4.119-.021-4 5-4h21c2.209 0 4 1.791 4 4v24z"/><path fill="#E1E8ED" d="M31 31c0 1.657-1.343 3-3 3H4c-1.657 0-3-1.343-3-3V7c0-1.657 1.343-3 3-3h24c1.657 0 3 1.343 3 3v24z"/><path fill="#5C913B" d="M31 32c0 2.209-1.791 4-4 4H6c-2.209 0-4-1.791-4-4V10c0-2.209 1.791-4 4-4h21c2.209 0 4 1.791 4 4v22z"/><path fill="#77B255" d="M29 32c0 2.209-1.791 4-4 4H6c-2.209 0-4-1.791-4-4V12c0-2.209 1.791-4 4-4h19.335C27.544 8 29 9.456 29 11.665V32z"/><path fill="#3E721D" d="M6 6C4.312 6 4.269 4.078 5 3.25 5.832 2.309 7.125 2 9.438 2H11V0H8.281C4.312 0 1 2.5 1 5.375V32c0 2.209 1.791 4 4 4h2V6H6z"/></g></svg>AltText: book greenPlacement: before-question
- VisualToken
- Type: asset-refEffectiveProvider: twemojiRequestedProvider: twemojiIconSize: 36Layout: icon-badgePlacement: before-questionItems: [{"ref":"twemoji:1f4d7","name":"book-green","count":1,"role":"badge"}]
Use the clues to find the mystery number.
Show answer
Answer: 53
- Clues
- My digits add up to 8.
- I am an odd number.
- I am less than 55.
- I am greater than 48.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 46
- Clues
- I am an even number.
- I am greater than 37.
- I am not a multiple of 3.
- My tens digit is 4.
- Half of me is 23.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 36
- Clues
- I am a multiple of 2.
- My digits add up to 9.
- I am less than 37.
- I am greater than 28.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 22
- Clues
- I am not a multiple of 3.
- Half of me is 11.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 75
- Clues
- I am an odd number.
- I am greater than 66.
- I am less than 81.
- I am a multiple of 3.
- My tens digit is 7.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 32
- Clues
- If you double me, you get 64.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 96
- Clues
- My tens digit is 9.
- My digits add up to 15.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 13
- Clues
- I am less than 24.
- My ones digit is 3.
- If you double me, you get 26.
- AnswerRange
- 10
- 99
- Visual
- Type: inline-svgSvg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#FFCC4D" d="M35.106 33.172L2.828.894C1.273-.662 0-.135 0 2.065V32c0 2.2 1.8 4 4 4h29.935c2.2 0 2.727-1.272 1.171-2.828zM16.967 28H10c-1.1 0-2-.9-2-2v-6.968c0-1.1.637-1.363 1.414-.586l8.139 8.14c.777.777.513 1.414-.586 1.414z"/></g></svg>AltText: triangle rulerPlacement: before-question
- VisualToken
- Type: asset-refEffectiveProvider: twemojiRequestedProvider: twemojiIconSize: 36Layout: icon-badgePlacement: before-questionItems: [{"ref":"twemoji:1f4d0","name":"triangle-ruler","count":1,"role":"badge"}]
Use the clues to find the mystery number.
Show answer
Answer: 95
- Clues
- My digits add up to 14.
- If you double me, you get 190.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 74
- Clues
- My tens digit is 7.
- My digits add up to 11.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 30
- Clues
- My ones digit is 0.
- Half of me is 15.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 25
- Clues
- I am a multiple of 5.
- I am an odd number.
- If you double me, you get 50.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 36
- Clues
- My ones digit is 6.
- If you double me, you get 72.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 76
- Clues
- Half of me is 38.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 75
- Clues
- My ones digit is 5.
- I am less than 80.
- I am greater than 68.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 28
- Clues
- I am an even number.
- I am not a multiple of 3.
- If you double me, you get 56.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 10
- Clues
- Half of me is 5.
- AnswerRange
- 10
- 99
- Visual
- Type: inline-svgSvg: <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 44 44" width="44" height="44"><g transform="translate(4,4) scale(1)"><path fill="#269" d="M35 26c0 2.209-1.791 4-4 4H5c-2.209 0-4-1.791-4-4V6.313C1 4.104 6.791 0 9 0h20.625C32.719 0 35 2.312 35 5.375V26z"/><path fill="#CCD6DD" d="M33 30c0 2.209-1.791 4-4 4H7c-2.209 0-4-1.791-4-4V6c0-4.119-.021-4 5-4h21c2.209 0 4 1.791 4 4v24z"/><path fill="#E1E8ED" d="M31 31c0 1.657-1.343 3-3 3H4c-1.657 0-3-1.343-3-3V7c0-1.657 1.343-3 3-3h24c1.657 0 3 1.343 3 3v24z"/><path fill="#3B88C3" d="M31 32c0 2.209-1.791 4-4 4H6c-2.209 0-4-1.791-4-4V10c0-2.209 1.791-4 4-4h21c2.209 0 4 1.791 4 4v22z"/><path fill="#55ACEE" d="M29 32c0 2.209-1.791 4-4 4H6c-2.209 0-4-1.791-4-4V12c0-2.209 1.791-4 4-4h19.335C27.544 8 29 9.456 29 11.665V32z"/><path fill="#269" d="M6 6C4.312 6 4.269 4.078 5 3.25 5.832 2.309 7.125 2 9.438 2H11V0H8.281C4.312 0 1 2.5 1 5.375V32c0 2.209 1.791 4 4 4h2V6H6z"/></g></svg>AltText: book bluePlacement: before-question
- VisualToken
- Type: asset-refEffectiveProvider: twemojiRequestedProvider: twemojiIconSize: 36Layout: icon-badgePlacement: before-questionItems: [{"ref":"twemoji:1f4d8","name":"book-blue","count":1,"role":"badge"}]
Use the clues to find the mystery number.
Show answer
Answer: 38
- Clues
- Half of me is 19.
- AnswerRange
- 10
- 99
Teaching Notes
Practice number detective with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Number Detective Hard Worksheets worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.