Posted by **chandice** on Saturday, July 4, 2009 at 12:00pm.

Construct a factor tree for the given number.

5) 392

- math -
**Marth**, Saturday, July 4, 2009 at 1:24pm
Keep dividing by any factors until you get to the prime factors.

2 goes into 392.

392/2 = 196

2 goes into 196

196/2 = 98

2 goes into 98

98/2 = 49

So far we have 2^3, because we divided by 2 three times.

Now, 7 goes into 49.

49/7 = 7.

Therefore, we have 7^2 and 2^3 as the prime factors

- math -
**MathMate**, Saturday, July 4, 2009 at 1:27pm
392

| \

196 2

| \

98 2

| \

49 2

| \

7 7

therefore

392 = 2.2.2.7.7

.

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