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September 30, 2014

September 30, 2014

Posted by **Will** on Sunday, February 10, 2008 at 9:52pm.

- 4th grade math -
**Anonymous**, Sunday, February 10, 2008 at 10:21pmanswer is 10...i used guess and check ...!

- 4th grade math -
**Will**, Sunday, February 10, 2008 at 10:27pmWe also got ten, but we trying to explain it to a 9 year old for her schoolwork. That is where we are stuck.

- 4th grade math -
- 4th grade math -
**Reiny**, Monday, February 11, 2008 at 8:18amMath is the study of patterns.

My first column is the sum of cans after so many rows,

the second column in the increase in the number of cans

Think of racking up billiard balls

.......О

.....О О

....О О О

...О О О О

..О О О О О

.О О О О О О

О О О О О О О

О О О О О О О О

1

---2

3

---3

6

---4

10

---5

15

---6

21

etc, do you see the pattern?

- 4th grade math -
**Anonymous**, Monday, April 16, 2012 at 8:03pm10

- 4th grade math -
**rebecca rosenjust**, Wednesday, April 17, 2013 at 5:27pmthe answer i got was 7 tennis balls

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