Workbook Detail
Number Detective Hard — Set 4
Use the clues to find the mystery number.
Show answer
Answer: 27
- Clues
- My tens digit is 2.
- I am an odd number.
- I am a multiple of 3.
- If you double me, you get 54.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 94
- Clues
- My ones digit is 4.
- My digits add up to 13.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 11
- Clues
- I am less than 26.
- My ones digit is 1.
- My tens digit is 1.
- AnswerRange
- 10
- 99
- Visual
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Use the clues to find the mystery number.
Show answer
Answer: 32
- Clues
- I am greater than 23.
- I am less than 39.
- My ones digit is 2.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 19
- Clues
- My digits add up to 10.
- I am an odd number.
- My tens digit is 1.
- 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 d="M11.946 27C-1.036 7.876 7.524 2.752 9.114 2c.149-.07.242-.105.245-.107.418-.209.638-.675.529-1.125C9.779.318 9.372 0 8.903 0H4.847C1.054 0-4.282 11 5.859 28c.151.253 5.073 0 5.073 0 .559 0 1.324-.541 1.014-1zM31.229 0h-4c-.462 0-.863.318-.971.768-.107.45.109.916.521 1.125.004.002.095.037.242.107 1.568.752 10.01 5.876-2.792 25-.307.459.448 1 1 1 0 0 4.854.253 5.002 0 10-17 4.739-28 .998-28z" fill="#C1694F"/><path d="M6.889 28.836l.004.01c-.064-.293 5.363-1.387 5.053-1.846C-1.036 7.876 7.524 2.752 9.114 2H4.845C1.053 2-3.268 13 6.889 28.836zM31.231 2h-4.21c1.568.752 10.01 5.876-2.792 25-.307.459 4.984 1.839 4.986 1.836C39.231 13 34.971 2 31.231 2z" fill="#662113"/><path fill="#C1694F" d="M9.916 8c-.561 0-1.015-.448-1.015-1 0-3.316-2.028-5-4.056-5-.47 0-.08-.782.029-1.232.11-.45.516-.768.985-.768h5.071c3.791 0 4.938 6.136 5.057 6.835.049.29-.034.586-.226.811-.195.225-.478.354-.775.354h-5.07zm16.315 0c.553 0 1-.448 1-1 0-3.316 2-5 4-5 .463 0 .078-.782-.029-1.232-.107-.45-.508-.768-.971-.768h-5c-3.738 0-4.869 6.136-4.986 6.835-.049.29.033.586.223.811.191.225.47.354.763.354h5z"/><path fill="#BE1931" d="M6 32s0 4 4 4h16s4 0 4-4V10s0-4-4-4H10c-4 0-4 4-4 4v22z"/><path fill="#A0041E" d="M24 28H12c-2.201 0-3-1.794-3-3V11c0-.552.448-1 1-1s1 .448 1 1v14c.012.45.195 1 1 1h12c.45-.012 1-.194 1-1V11c0-.552.447-1 1-1s1 .448 1 1v14c0 2.201-1.794 3-3 3z"/><path fill="#FFF" d="M16 25s0-1 1-1h2s1 0 1 1v5s0 1-1 1h-2s-1 0-1-1v-5z"/></g></svg>AltText: backpackPlacement: before-question
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Use the clues to find the mystery number.
Show answer
Answer: 47
- Clues
- My ones digit is 7.
- I am not a multiple of 3.
- My digits add up to 11.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 82
- Clues
- I am an even number.
- My tens digit is 8.
- My ones digit is 2.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 26
- Clues
- My digits add up to 8.
- I am a multiple of 2.
- If you double me, you get 52.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 12
- Clues
- Half of me is 6.
- 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="#C1694F" d="M32 34c0 1.104-.896 2-2 2H6c-1.104 0-2-.896-2-2V7c0-1.104.896-2 2-2h24c1.104 0 2 .896 2 2v27z"/><path fill="#FFF" d="M29 32c0 .553-.447 1-1 1H8c-.552 0-1-.447-1-1V9c0-.552.448-1 1-1h20c.553 0 1 .448 1 1v23z"/><path fill="#CCD6DD" d="M25 3h-4c0-1.657-1.343-3-3-3s-3 1.343-3 3h-4c-1.104 0-2 .896-2 2v5h18V5c0-1.104-.896-2-2-2z"/><circle fill="#292F33" cx="18" cy="3" r="2"/><path fill="#99AAB5" d="M20 14c0 .552-.447 1-1 1h-9c-.552 0-1-.448-1-1s.448-1 1-1h9c.553 0 1 .448 1 1zm7 4c0 .552-.447 1-1 1H10c-.552 0-1-.448-1-1s.448-1 1-1h16c.553 0 1 .448 1 1zm0 4c0 .553-.447 1-1 1H10c-.552 0-1-.447-1-1 0-.553.448-1 1-1h16c.553 0 1 .447 1 1zm0 4c0 .553-.447 1-1 1H10c-.552 0-1-.447-1-1 0-.553.448-1 1-1h16c.553 0 1 .447 1 1zm0 4c0 .553-.447 1-1 1h-9c-.552 0-1-.447-1-1 0-.553.448-1 1-1h9c.553 0 1 .447 1 1z"/></g></svg>AltText: chalkboardPlacement: before-question
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Use the clues to find the mystery number.
Show answer
Answer: 32
- Clues
- I am a multiple of 2.
- My tens digit is 3.
- Half of me is 16.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 77
- Clues
- My digits add up to 14.
- If you double me, you get 154.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 91
- Clues
- I am greater than 77.
- If you double me, you get 182.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 15
- Clues
- I am less than 30.
- My tens digit is 1.
- I am a multiple of 3.
- My ones digit 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)"><circle fill="#88C9F9" cx="18" cy="18" r="18"/><path fill="#5C913B" d="M25.716 1.756c-1.022.568-1.872 1.528-3.028 1.181-1.875-.562-4.375-1.812-6-.25s-2 3 0 2.938 3.375-2.438 4.375-1.438.749 1.813-1.625 2.125S14.5 7 13.125 7s-1.688.812-.75 1.688-.563.937-2.125 1.812.375 1.25 1.688 2 2.312-.188 2.875-1.438 2.981-2.75 3.99-2.562c1.01.188 1.01.688.822 1.562s.75.625.812-.375 1.188-1.75 2.062-1.812 1.625 1.188.625 1.812-2 1.125-.75 1.438 2.125 1.938.688 2.625-3.937 1.125-5.062.562-3.688-1.375-4.375-.938-1.062.89-1.875 1.195c-.812.305-4.125 1.805-4.188 3.743S7.438 22.438 8.75 22.5s4.5-.812 5.5-1.625 2.375-.625 2.812.312.125 1.5-.312 3 .286 2.25.987 3.562c.701 1.312 1.263 2.062 1.263 3s1 1.875 2.5.312 2.875-4.625 3.5-5.75 1.125-3.625 1.875-4.125 1.938-1.688 1.062-1.5-2.625-.062-3.062-1.312-2.312-3.625-1.438-3.875 1.875 1.39 2.25 2.164c.375.774.875 1.711 1.625 1.961s2.375-1.673 2.875-1.961c.5-.289.125-1.476-.875-1.351s-2.312 0-2.312-.624 1.25-1.438 2.25-1.25 1.75.5 2.375 1.25 1.875 2.125 2.375 3 .875 1 1.125-.562c.166-1.038.387-1.609.59-2.222-1.013-5.829-4.82-10.683-9.999-13.148z"/></g></svg>AltText: globePlacement: before-question
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Use the clues to find the mystery number.
Show answer
Answer: 95
- Clues
- I am an odd number.
- My tens digit is 9.
- I am not a multiple of 3.
- I am a multiple of 5.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 99
- Clues
- My digits add up to 18.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 50
- Clues
- I am greater than 37.
- I am less than 52.
- Half of me is 25.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 34
- Clues
- I am greater than 21.
- If you double me, you get 68.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 52
- Clues
- If you double me, you get 104.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 33
- Clues
- I am a multiple of 3.
- My ones digit is 3.
- I am less than 42.
- AnswerRange
- 10
- 99
Use the clues to find the mystery number.
Show answer
Answer: 58
- Clues
- My digits add up to 13.
- My ones digit is 8.
- 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.