Chez J Posted October 7, 2008 Share Posted October 7, 2008 (3+5) x ? = 24 Is this pre-algebra? What grade level is this? Lesley Quote Link to comment Share on other sites More sharing options...
Chris in VA Posted October 7, 2008 Share Posted October 7, 2008 Well, it's got to be above 4th grade, because it combines multiplication and addition. There are also parentheses, and there's a missing term. I'd say 6th grade. Quote Link to comment Share on other sites More sharing options...
Tabrett Posted October 7, 2008 Share Posted October 7, 2008 Pre-algebra would be my vote. Quote Link to comment Share on other sites More sharing options...
AndyJoy Posted October 7, 2008 Share Posted October 7, 2008 While it's a "pre-algebra" skill, I would say 6th grade. I taught 6th grade math this last year at a school using Glencoe Middle School Math and there were problems like this in that book. Quote Link to comment Share on other sites More sharing options...
Mallory Posted October 7, 2008 Share Posted October 7, 2008 These are some problems from the Miquon Blue book. (4 x __) + 6 = 46 (10 x __) + 5 = 85 __ x (3 + 1) = 16 Miquon Blue is considered early 2nd grade. My 9yo 3rd grader got it easy, my 7yo 2nd grader had to have some help, but mostly because he wasn't paying attention. I taught my 6th grade sister last year and that seems very simple for her. Quote Link to comment Share on other sites More sharing options...
Tree House Academy Posted October 7, 2008 Share Posted October 7, 2008 (edited) Well, my 4th grader is doing this type of math right now. It is definitely pre-algebra; find the missing factor type stuff. It is simply learning to do the problem in parenthesis first. However, all you have to do is throw an "a" in the blank and you could call that an algebraic equation. :) (3+5) x ? = 24 8 x a = 24 a = 24/8 a = 3 Edited October 7, 2008 by Tree House Academy Quote Link to comment Share on other sites More sharing options...
mycalling Posted October 7, 2008 Share Posted October 7, 2008 My DsD did these type of problems last year for 3rd grade math. Quote Link to comment Share on other sites More sharing options...
KarenNC Posted October 7, 2008 Share Posted October 7, 2008 Singapore 3A standards edition, one of the problems my daughter had in her review today, p. 93 There are 18 chairs in the first row. There are 25 chairs in each of the other 5 rows. How many chairs are there altogether? Now it's not written out with parentheses, but the operations have to happen as follows: Number of chairs in first row + number of chairs in other rows = total number of chairs 18 + (5 X 25) =? So combining addition and multiplication happens at least in 3A in Singapore in the two step word problems (maybe in 2B, can't remember), whether they write it out with parentheses or using their bar method. Quote Link to comment Share on other sites More sharing options...
teachermom_7 Posted October 7, 2008 Share Posted October 7, 2008 (3+5) x ? = 24 Is this pre-algebra? What grade level is this? Lesley We're working these exact type problems in 3rd grade math (BJU). Tammie in LA Quote Link to comment Share on other sites More sharing options...
Jen500 Posted October 7, 2008 Share Posted October 7, 2008 We had similar problems in Singapore 3rd grade. Quote Link to comment Share on other sites More sharing options...
Jennefer@SSA Posted October 7, 2008 Share Posted October 7, 2008 That would be pre-algebra but you can find similar problems in Horizons 4 and 5 for sure! Ds7 is on lesson 45 of Horizons 3 and is already solving: (4+9) - n = 10 or n + (8+5) = 24 Quote Link to comment Share on other sites More sharing options...
Kay in Cal Posted October 7, 2008 Share Posted October 7, 2008 (edited) I would agree with the 3rd grade analysis... We use EPGY math online from Stanford... now it IS supposed to be rigorous and college prep, but not age inappropriate. These types of problems, and ones more complex, are included in the 3rd grade curriculum (we're just finishing it up now). Although they tend to use variables, so the problem would be shown as: (3+5) x a = 24, then 8 x a = 24, a = 3. It's really just arithmetic using some algebraic methods. I know ds has learned the commutative, associative and distributive properties this year. Edited October 7, 2008 by Kay in Cal Quote Link to comment Share on other sites More sharing options...
Tabrett Posted October 7, 2008 Share Posted October 7, 2008 (3+5) x ? = 24 Is this pre-algebra? What grade level is this? Lesley I've already given an answer(pre-algebra), but I'm curious why you asked the question.:confused: Quote Link to comment Share on other sites More sharing options...
Diane Posted October 7, 2008 Share Posted October 7, 2008 I'd say 3rd grade...funny, when I was in school, that would have been considered 8th grade. :) Quote Link to comment Share on other sites More sharing options...
Chez J Posted October 7, 2008 Author Share Posted October 7, 2008 I've already given an answer(pre-algebra), but I'm curious why you asked the question.:confused: My dd was solving this type problem last night, and we've not ever done this before. She's in Horizons and Singapore 3rd, so we're going to get to it soon I guess. LOL! I just had no idea. Quote Link to comment Share on other sites More sharing options...
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