**The Counting-Up Method (Subtraction) Explained:**

Thank you for visiting our site for more information on the Counting-Up Method! The counting up method is based on the idea that in order to find the difference of two numbers, you can count the spaces in-between. Here's an example:

32

-15

-----

-----

15

-----

20

-----

**+5**-----

20

**+10**-----

30

-----

32

**+ 2**-----

32

Now, go back and add all of the addition steps you made to find the difference (5+10+2=

**17**)

**The Partial Sums Algorithm Explained:**

Thank you for visiting our site for more information on the Partial Sums Algorithm (PSA). It isn't as complicated as it might sound! Let's look at a double digit addition problem as an example:

25

+31

------

Instead of beginning with adding the ones column (5+1), PSA begins with adding the tens column (2+3). Since the 2 and the 3 are in the tens column, we are really adding 20+30.

25

+31

-------

**50**

Now, let's move to the right and add just the ones together:

25

+31

-------

50

**6**

The final step involves adding the sums of 20+30 and 5+1 together to find the final sum of 25+31:

25

+31

--------

+31

--------

**50**

+ 6

------

56+ 6

------

56

**Tips for Math Homework -**

•

__Assist__your child w/ nightly homework.
•When no help is needed, check their answers and ask them to explain how they came to their conclusions.

•Encourage your child to be patient - Sometimes math doesn’t come easy!

•Maintain positive attitudes toward Mathematics at home!

•Set up a study plan at home for your child. I am more than happy to help you make one! email: wwelty@bermudian.org