Workbook Detail
Number Detective Hard — Set 8
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"answer": 32,
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"answer": 25,
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"id": 3,
"type": "number-detective",
"clues": [
"My tens digit is 4.",
"I am not a multiple of 3.",
"My ones digit is 9."
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"answer": 49,
"correctAnswer": "49",
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"question": "Use the clues to find the mystery number."
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"id": 4,
"type": "number-detective",
"clues": [
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"My ones digit is 2.",
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"answer": 22,
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"id": 5,
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"My ones digit is 9.",
"I am greater than 64.",
"My tens digit is 6."
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"answer": 69,
"correctAnswer": "69",
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"question": "Use the clues to find the mystery number."
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"id": 6,
"type": "number-detective",
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"I am greater than 76.",
"If you double me, you get 162."
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"answer": 81,
"correctAnswer": "81",
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"id": 7,
"type": "number-detective",
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"I am less than 74.",
"My digits add up to 10.",
"My ones digit is 3."
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"answer": 73,
"correctAnswer": "73",
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"question": "Use the clues to find the mystery number."
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"type": "number-detective",
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"answer": 11,
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"id": 10,
"type": "number-detective",
"clues": [
"If you double me, you get 108."
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"answer": 54,
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"question": "Use the clues to find the mystery number."
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"id": 11,
"type": "number-detective",
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"If you double me, you get 100."
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"answer": 50,
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"id": 12,
"type": "number-detective",
"clues": [
"My tens digit is 4.",
"If you double me, you get 80."
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"answer": 40,
"correctAnswer": "40",
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"question": "Use the clues to find the mystery number."
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{
"id": 13,
"type": "number-detective",
"clues": [
"If you double me, you get 68."
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"answer": 34,
"correctAnswer": "34",
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"question": "Use the clues to find the mystery number."
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{
"id": 14,
"type": "number-detective",
"clues": [
"My digits add up to 15.",
"I am less than 83.",
"If you double me, you get 138."
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"answer": 69,
"correctAnswer": "69",
"answerRange": [
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99
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"question": "Use the clues to find the mystery number."
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"id": 15,
"type": "number-detective",
"clues": [
"My tens digit is 3.",
"My digits add up to 5."
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"answer": 32,
"correctAnswer": "32",
"answerRange": [
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"question": "Use the clues to find the mystery number."
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{
"id": 16,
"type": "number-detective",
"clues": [
"I am not a multiple of 5.",
"I am a multiple of 2.",
"I am greater than 85.",
"My ones digit is 8.",
"My digits add up to 17."
],
"answer": 98,
"correctAnswer": "98",
"answerRange": [
10,
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"question": "Use the clues to find the mystery number."
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{
"id": 17,
"type": "number-detective",
"clues": [
"My tens digit is 2.",
"My ones digit is 3."
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"answer": 23,
"correctAnswer": "23",
"answerRange": [
10,
99
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"question": "Use the clues to find the mystery number."
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{
"id": 18,
"type": "number-detective",
"clues": [
"I am less than 56.",
"My ones digit is 1.",
"I am a multiple of 3.",
"I am greater than 43."
],
"answer": 51,
"correctAnswer": "51",
"answerRange": [
10,
99
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"question": "Use the clues to find the mystery number."
},
{
"id": 19,
"type": "number-detective",
"clues": [
"I am less than 60.",
"My digits add up to 10.",
"Half of me is 23."
],
"answer": 46,
"correctAnswer": "46",
"answerRange": [
10,
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"question": "Use the clues to find the mystery number."
},
{
"id": 20,
"type": "number-detective",
"clues": [
"I am not a multiple of 2.",
"I am less than 46.",
"My ones digit is 5.",
"If you double me, you get 90."
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"answer": 45,
"correctAnswer": "45",
"answerRange": [
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}Teaching Notes
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
- Use the clues to find the mystery number.
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.