Tuesday, January 20, 2015

Adding 2 Digit Numbers & Spelling

We are learning to vertically write numbers in place to add with regrouping. 
   1
   24
+ 39
   63

Always start adding from the right side, which is the pennies column.  We bring the dime from 4 + 9 = 13 to the top and place it over the 2 in the tens column. Make sure you begin counting with the dime you placed at the top….
1 + 2 = 3 and continue  3 + 3 = 6  The sum (answer) is 63.  You may also need to place cent signs after each number depending on the problem.

THIS BECOMES A HARD TASK when one of the numbers is a single digit.
3 + 28 is more difficult then it looks.  Students tend to line up the 3 with the tens column instead of the pennies column.

   3
+ 28
   58

This is not correct and is very hard for students to see.  The true answer occurs when the single digit is placed into the pennies column.
   1
     3
+ 28
   31

3 + 8 = 11, The dime is placed at the top above the empty space.  Adding continues at the top of the empty space with 1 + 2 = 3.

The sum (answer) is 31. 

SPELLING WORD LIST (long e spelled ea or ee)

free, teach, teeth, please, beach, wheel, team, speak, 
sneeze, sheep, meaning, weave, eat, read, between, reason

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