1. + 3 1 4 8 2 9 6 = 10 7 5 - Magic Math (Checking)10 7 5 -
GLE     Understand that addition and subtraction are inverse operations.

2. 6 3 + 3 = 3 + 3 = 6 Let’s start with something easy!
Now, let’s learn some new words.
3 + 3 = 6
The numbers you are adding are called addends. The
answer is called the sum.

3. 3 + 3 = 6 to , 6 – 3 = 3 You can check a Math problem to see if
your answer is correct.
3 + 3 = to ,
Subtract one of the addends from the sum. The answer should be the other addend. If not, try again.
6 – 3 = 3

4. Try this: 14
7 + 7 =
Now let’s it!
14 – 7 = CORRECT!

5. Now, try these: Now, let’s them. 6 + 6 = 4 + 4 = 8 + 8 = 5 + 5 =
2 + 2 =
9 + 9 =
Now, let’s them.

6. =
8 - 4 = = = =
4 - 2 =

7. Are you correct? WAY 2 Go! 6 + 6 = 12 4 + 4 = 8 8 + 8 = 16 5 + 5 = 10
4 + 4 = 8
8 + 8 = 16
5 + 5 = 10
2 + 2 = 4
9 + 9 = 18
WAY 2 Go!