Posted by **Sarah** on Monday, November 26, 2012 at 7:47pm.

How can you use 4x7 to find 8x7? find the product. I dont understand this how can i expect my 3rd grader to understand.

- math 3rd grade -
**Rylee**, Monday, November 26, 2012 at 7:53pm
4x7= 28

8x7= 56

28 x2 = 56

Tell ur 3rd grader that double of 4x7 (28) will equal to 8x7 (56)

hope this helps :)

- math 3rd grade -
**allison**, Monday, November 26, 2012 at 8:05pm
Well see 4x7 doubled is well 28+28=56 so 4x7 doubled is equal to 8x7 hope this helps

- math 3rd grade -
**kriti**, Wednesday, November 28, 2012 at 12:19am
4 x 7 = 28

Double of 4 is 8, so we will double 28

(4x2) x 7 = (28x28)

or

(4+4) x 7 = (28+28) answer 56)

- math 3rd grade -
**checker**, Monday, January 21, 2013 at 10:16pm
Correct

- math 3rd grade -
**shiane**, Wednesday, January 29, 2014 at 5:19pm
2+2=4

- math 3rd grade -
**NOBLE**, Thursday, February 20, 2014 at 4:46am
WHAT IS THE HIGEST COMMON FRACTION OF 16 AND 20.

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