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Thread: Math Lesson Error

02232012, 11:28 PM #1Junior Member Newbie
 Join Date
 Jan 2012
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 tn
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Math Lesson Error
My son just finished failing a quiz. I sat down to go over the questions with him and explain what he did wrong and how it should be done. There are errors in the quiz. There were 2 of the ten questions that appeared to have no correct answer. Quiz: Theory of Multiplication  MA6242
4. [MA6242 AQ6MA_MA6242_09]
Which equation would demonstrate the distributive property?
A) 3(7 26) = (3 + 7) + (3 + 26)
B) 3(7 26) = (3 7) + (3 26)
C) 8 1 = 8
D) (8 1) 7 = 8 (1 7)
10. [MA6242 AQ6MA_MA6242_12]
Which equation would demonstrate the distributive property?
A) 4(7 26) = (4 + 7) + (4 + 26)
B) 4(7 26) = (4 7) + (4 26)
C) 8 1 = 8
D) (8 1) 7 = 8 (1 7)
Both of these questions should have a plus symbol on the left side of answer B. That is the only option that would make any of the answers correct. Someone should fix this so that the kids aren't confused and failing for no reason.

02242012, 10:55 AM #2T4L Support
 Join Date
 Aug 2011
 Posts
 38
The correct answer for each question is letter B. The plus sign is not necessary to correctly solve each problem. The distributive property is a(b+c)= (a x b) + (a x c). For the first question, 3(7x26) is equal to (3x7) +(3x26), making B the correct answer. You may want to have your child review the lesson on the distributive property, activity number MA6243 for a more thorough explanation on the topic.

02292012, 12:13 PM #3Junior Member Newbie
 Join Date
 Jan 2012
 Location
 tn
 Posts
 3
Yes the distributive property is a(b+c)= (a x b) + (a x c) and not a(bxc)= (axb) + (axc)
Therefore, a(bxc) listed on the left side of those equations is wrong and the first should say B) 3(7+ 26) = (3 7) + (3 26). As written the left side has nothing to do with distributive property and all three terms would be multiplied together. Work the problems out. We shouldn't teach our kids that 546= 99 or 728=132. They are erroneous answers.

02292012, 02:21 PM #4T4L Support
 Join Date
 Aug 2011
 Location
 FL
 Posts
 72
We greatly appreciate your feed back and will be sure to pass it on to the program developers. Thank you and please let us know if we provide you any further assistance.
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