Posted by Anonymous on .
Break apart the addends. Solve for the total sum.
18
+ 21


Math (kindergarten)??? 
Ms. Sue,
10 + 8 + 20 + 1 =
or
20  2 + 20 + 1 
Math (kindergarten) 
Ann,
39

Math (kindergarten) 
anon,
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,
go to the right.8+1=9
go to the left.1+2=3
it is 39. 
Math (kindergarten) 
Lauren,
10+8+20+1= 39

Math (kindergarten) 
Eduarda cardoso,
39

Math (kindergarten) 
Kaitlyn,
18 + 21 = 39
Answer:
39