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

2. 5 3 + 2 = 2 + 3 = 5 Let’s start with something easy!
Now, let’s learn something new.
2 + 3 = 5
In an addition number sentence, you can switch
the addends around and the sum will always be the same.

3. Try this: 9
2 + 7 =
Now let’s switch it!
7 + 2 = 9

4. Now, try these on your own:
6 + 2 =
2 + 6 =
2 + 4 =
4 + 2 =
9 + 2 =
2 + 9 =
Remember! When you are adding 2 to
an even number the answer will be even.
If you are adding 2 to an odd number,
the answer will be odd.

5. Tricky Tip! We only switch the addends around when we are adding.
It doesn’t work with subtraction.

6. If the answer isn’t the same, check your Math!
Quick Review
When adding, you can switch the addends around and get the same answer.
4 + 3 = = 7
If the answer isn’t the same, check your Math!
You cannot switch when subtracting!
0 – 6 = 6
6 – 0 = 6

7. Now, get
to work!!