Number Detective task cards with clues for solving a 3-digit mystery number puzzle.

Four "Number Detective" math task cards featuring a cartoon detective character, each with a clue about a mystery number involving digits, place value, and odd numbers.

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- The secret number has 3 digits.
- To find the digit in the hundreds place, subtract 19 from 21: 21 - 19 = 2. So, the hundreds digit is 2.
- The digit in the ones place is 0, 2, 3, or 8.
- The secret number is an odd number, so the ones digit must be odd. From the options, only 3 is odd.
- Therefore, the ones digit is 3.
- The tens digit is not specified, so it can be any digit from 0 to 9.
- The number is in the form 2 _ 3, where the tens digit can be any digit 0-9.
- The secret number is any 3-digit number starting with 2, ending with 3, and having any tens digit.

Parent Tip: Review the logic above to help your child master the concept of number detective worksheet.

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