Factors Of 84 - Find The Factors

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Today’s Puzzle:

Write the numbers from 1 to 12 in both the first column and the top row so that this puzzle functions like a multiplication table.

2014-14 Level 2

This week’s puzzles and last week’s solutions: 12 Factors 2014-04-07

Factors of 84:

84 is a composite number. 84 = 1 x 84, 2 x 42, 3 x 28, 4 x 21, 6 x 14, or 7 x 12. Factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. Prime factorization: 84 = 2 x 2 x 3 x 7 which can also be written 2² x 3 x 7.

Sometimes 84 is a clue in the FIND THE FACTORS 1 – 12 puzzles. Even though it has other factors, we only use 84 = 7 x 12 in the puzzles.

Sum-Difference Puzzle:

84 has six factor pairs. One of those factor pairs adds up to 25, and another one subtracts to 25. If you can identify those factor pairs, then you can solve this puzzle!

More about the Number 84:

84 is prominent in this cool pattern:

Answer to This Week’s Puzzle:

2014-14 Level 2 Factors

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