Posted by Anonymous on Wednesday, October 10, 2012 at 6:15pm.
Break apart the addends. Solve for the total sum.
18
+ 21


Math (kindergarten)???  Ms. Sue, Wednesday, October 10, 2012 at 6:22pm
10 + 8 + 20 + 1 =
or
20  2 + 20 + 1

Math (kindergarten)  Ann, Tuesday, October 23, 2012 at 4:09pm
39

Math (kindergarten)  anon, Tuesday, October 30, 2012 at 9:08pm
start on the right. 8+1=9 move to the left side. 1+2= 3. the solution to this problem is 39

Math (kindergarten)  Caleb, Sunday, November 4, 2012 at 6:49pm
go to the right.8+1=9
go to the left.1+2=3
it is 39.

Math (kindergarten)  Lauren, Monday, November 5, 2012 at 7:43pm
10+8+20+1= 39

Math (kindergarten)  Eduarda cardoso, Monday, April 1, 2013 at 3:50pm
39

Math (kindergarten)  Kaitlyn, Friday, May 10, 2013 at 8:55am
18 + 21 = 39
Answer:
39
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