# Grouping Symbols

• Oct 15th 2008, 08:25 PM
sedfam
Grouping Symbols
Need help with 6th grade sons homework...please...Insert grouping symbols to make each statement true.

18 + 2 x 1 + 3^2 = 38

4 x 2 - 2^2 / 9 + 2 = 6

3^3 - 9 x 2 + 1 = 8

2^3 -3 x 5 - 8 = 1

35 + 4^2 - 6 - 3 = 48

6 x 7 - 3 x 4 + 1 = 27

Thanks!!!!!!!!!
• Oct 15th 2008, 08:38 PM
terr13
18 + 2 x (1 + 3^2) = 38

(4 x 2 - 2)^2 / 9 + 2 = 6

3^3 - (9 x 2 + 1) = 8

2^3 -(3 x 5 - 8) = 1

35 + 4^2 - (6 - 3) = 48

6 x 7 - 3 x( 4 + 1) = 27
• Oct 15th 2008, 08:42 PM
sedfam
Thank you thank you
Thank you so much - how did you figure them out so quickly...is there some kind of formula to teach my 6th grader???? Thanks again
• Oct 15th 2008, 08:47 PM
terr13
I just looked at it.. I guess too much math isn't always a bad thing. I used to play a similar game for fun called 24, where you flip up 4 random playing cards and try to make 24 from them. Each card has value equal to their strength (K=13, Q=12.....2=2, A=1), using only the standard operations.

You can easily rule out some of the possiblities, since it would make it impossible to match the other side (2^-1 or 2^8 doesn't help), then just figure out the numbers you need to make it true.
• Oct 15th 2008, 08:49 PM
sedfam
wow - again thank you very much for all your help!!!! I know he will appreciate it!!!
• Oct 15th 2008, 08:52 PM
terr13
Just try to have him try it out first before giving him the answers, otherwise he won't learn much from it.