Workbook Detail
Number Detective Medium — Set 8
Use the clues to find the mystery number.
Show answer
Answer: 45
- Clues
- If you double me, you get 90.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 42
- Clues
- Half of me is 21.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 40
- Clues
- My tens digit is 4.
- If you double me, you get 80.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 16
- Clues
- I am less than 21.
- My ones digit is 6.
- I am a multiple of 4.
- AnswerRange
- 5
- 50
- 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="#99AAB5" d="M35.354 25.254c.217-2.391-.513-4.558-2.057-6.102L17.033 2.89c-.391-.391-1.024-.391-1.414 0-.391.391-.391 1.024 0 1.414l16.264 16.263c1.116 1.117 1.642 2.717 1.479 4.506-.159 1.748-.957 3.456-2.188 4.686-1.23 1.23-2.938 2.027-4.685 2.187-1.781.161-3.39-.362-4.506-1.479L3.598 12.082c-.98-.98-1.059-2.204-.953-3.058.15-1.196.755-2.401 1.66-3.307 1.7-1.7 4.616-2.453 6.364-.707l14.85 14.849c1.119 1.12.026 2.803-.708 3.536-.733.735-2.417 1.826-3.535.707L9.962 12.789c-.391-.391-1.024-.39-1.414 0-.391.391-.391 1.023 0 1.414l11.313 11.314c1.859 1.858 4.608 1.05 6.363-.707 1.758-1.757 2.565-4.507.708-6.364L12.083 3.597c-2.62-2.62-6.812-1.673-9.192.706C1.677 5.517.864 7.147.661 8.775c-.229 1.833.312 3.509 1.523 4.721l18.384 18.385c1.365 1.365 3.218 2.094 5.281 2.094.27 0 .544-.013.82-.037 2.206-.201 4.362-1.209 5.918-2.765 1.558-1.556 2.565-3.713 2.767-5.919z"/></g></svg>AltText: paperclipPlacement: before-question
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Use the clues to find the mystery number.
Show answer
Answer: 40
- Clues
- My tens digit is 4.
- I am less than 48.
- Half of me is 20.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 38
- Clues
- I am not a multiple of 5.
- I am less than 45.
- Half of me is 19.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 8
- Clues
- Half of me is 4.
- AnswerRange
- 5
- 50
- 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="#D99E82" d="M35.222 33.598c-.647-2.101-1.705-6.059-2.325-7.566-.501-1.216-.969-2.438-1.544-3.014-.575-.575-1.553-.53-2.143.058 0 0-2.469 1.675-3.354 2.783-1.108.882-2.785 3.357-2.785 3.357-.59.59-.635 1.567-.06 2.143.576.575 1.798 1.043 3.015 1.544 1.506.62 5.465 1.676 7.566 2.325.359.11 1.74-1.271 1.63-1.63z"/><path fill="#EA596E" d="M13.643 5.308c1.151 1.151 1.151 3.016 0 4.167l-4.167 4.168c-1.151 1.15-3.018 1.15-4.167 0L1.141 9.475c-1.15-1.151-1.15-3.016 0-4.167l4.167-4.167c1.15-1.151 3.016-1.151 4.167 0l4.168 4.167z"/><path fill="#FFCC4D" d="M31.353 23.018l-4.17 4.17-4.163 4.165L7.392 15.726l8.335-8.334 15.626 15.626z"/><path fill="#292F33" d="M32.078 34.763s2.709 1.489 3.441.757c.732-.732-.765-3.435-.765-3.435s-2.566.048-2.676 2.678z"/><path fill="#CCD6DD" d="M2.183 10.517l8.335-8.335 5.208 5.209-8.334 8.335z"/><path fill="#99AAB5" d="M3.225 11.558l8.334-8.334 1.042 1.042L4.267 12.6zm2.083 2.086l8.335-8.335 1.042 1.042-8.335 8.334z"/></g></svg>AltText: pencilPlacement: before-question
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Use the clues to find the mystery number.
Show answer
Answer: 14
- Clues
- My ones digit is 4.
- I am not a multiple of 3.
- My tens digit is 1.
- AnswerRange
- 5
- 50
- 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="#31373D" d="M24 14H12s-5 6-5 10 11 11 11 11 11-7 11-11-5-10-5-10z"/><path fill="#292F33" d="M19.64 1.28c-.901-.704-2.377-.704-3.278 0L1.639 12.776c-.901.704-.901 1.856 0 2.56l14.722 11.495c.902.704 2.377.704 3.278 0l14.722-11.495c.902-.704.902-1.856 0-2.56L19.64 1.28z"/><path fill="#394146" d="M19.64 1.28c-.901-.704-2.377-.704-3.278 0L1.639 12.776c-.901.704-.901 1.856 0 2.56l14.722 11.495c.901.704 2.377.704 3.278 0l14.723-11.495c.901-.704.901-1.856 0-2.56L19.64 1.28z"/><path fill="#FCAB40" d="M8 25s-2 2-2 3v6s0 2 2 2 2-2 2-2v-6c0-1-2-3-2-3z"/><circle fill="#FDD888" cx="8" cy="26" r="3"/><path fill="#FCAB40" d="M8.001 27c-.552 0-1-.447-1-1v-3.958c-.042-.634.187-2.036 1.317-2.884l9.022-7.91c.416-.365 1.048-.323 1.411.093.364.415.322 1.047-.093 1.411l-9.08 7.958C8.974 21.166 9 21.982 9 21.99L9.002 26c0 .553-.448 1-1.001 1z"/><circle fill="#31373D" cx="18" cy="13" r="3"/></g></svg>AltText: graduationPlacement: before-question
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Use the clues to find the mystery number.
Show answer
Answer: 42
- Clues
- My ones digit is 2.
- My tens digit is 4.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 13
- Clues
- My digits add up to 4.
- If you double me, you get 26.
- AnswerRange
- 5
- 50
- 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
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Use the clues to find the mystery number.
Show answer
Answer: 26
- Clues
- I am an even number.
- I am greater than 19.
- I am not a multiple of 5.
- My ones digit is 6.
- My digits add up to 8.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 48
- Clues
- I am not a multiple of 5.
- I am an even number.
- My tens digit is 4.
- I am greater than 45.
- My digits add up to 12.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 6
- Clues
- Half of me is 3.
- AnswerRange
- 5
- 50
- 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="#9AAAB4" d="M27.388 24.642L24.56 27.47l-4.95-4.95 2.828-2.828z"/><path fill="#66757F" d="M34.683 29.11l-5.879-5.879c-.781-.781-2.047-.781-2.828 0l-2.828 2.828c-.781.781-.781 2.047 0 2.828l5.879 5.879c1.562 1.563 4.096 1.563 5.658 0 1.56-1.561 1.559-4.094-.002-5.656z"/><circle fill="#8899A6" cx="13.586" cy="13.669" r="13.5"/><circle fill="#BBDDF5" cx="13.586" cy="13.669" r="9.5"/></g></svg>AltText: magnifierPlacement: before-question
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Use the clues to find the mystery number.
Show answer
Answer: 6
- Clues
- Half of me is 3.
- AnswerRange
- 5
- 50
- 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
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Use the clues to find the mystery number.
Show answer
Answer: 43
- Clues
- My tens digit is 4.
- I am an odd number.
- If you double me, you get 86.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 29
- Clues
- I am less than 33.
- My ones digit is 9.
- If you double me, you get 58.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 49
- Clues
- I am an odd number.
- My ones digit is 9.
- If you double me, you get 98.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 41
- Clues
- My ones digit is 1.
- If you double me, you get 82.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 21
- Clues
- If you double me, you get 42.
- AnswerRange
- 5
- 50
Use the clues to find the mystery number.
Show answer
Answer: 47
- Clues
- If you double me, you get 94.
- AnswerRange
- 5
- 50
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 Medium 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.