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Prime Factorization

Published on Nov 18, 2015

Naming numbers with prime factorization

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PRESENTATION OUTLINE

1.

PRIME FACTORS

NAMING NUMBERS
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2.

PICK ANY COMPOSITE #

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3.

PICK TWO FACTORS

CIRCLE ONE IF IT IS PRIME
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4.

IF THE FACTOR ISN'T PRIME

  • Find two factors of that number
  • If either of them is prime, circle
  • Continue breaking down the factors
  • You're done when all factors are prime
Photo by Will Montague
5.

NUMBER'S NEW NAME

MAKE A MULTIPLICATION STATEMENT WITH ALL THE CIRCLED #S
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6.

REMEMBER

ONE IS NOT PRIME!
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7.

LET'S TRY IT

WRITE 48 AT THE TOP OF YOUR PAPER
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8.

PICK TWO FACTORS

FOR INSTANCE, 2 AND 24
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9.

2 IS PRIME, CIRCLE IT

24 IS COMPOSITE, BREAK IT INTO 2 FACTORS
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10.

COMPOSITE

2 X 12, CIRCLE THE 2
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11.

COMPOSITE

2 X 6, CIRCLE THE 2
Photo by Leo Reynolds
12.

COMPOSITE

2 X 3, BOTH PRIME--CIRCLE THEM
Photo by Leo Reynolds
13.

48'S NEW NAME

2 X 2 X 2 X 2 X 3
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B Grogan