## Count Back Facts

There are 27 Count Backs facts with -1. -2. and -3.

When counting back emphasize the first number, pause, then continue counting down.

Example: 11 – 3: say, “**11**, pause, 10, 9, **8**.”

## 10 Facts

**Subtracting from 10****, **students use their knowledge of 10 frame addition facts to help them solve these facts.

10 – 8 = 2 think of 8+2 = 10

## Zero Finger Facts

The **Zero Finger** strategy is related to **Subtracting from 10**.

When there is a fact such as 13 – 5, the strategy is to cover the 3 in the 13 and think of a 0, so now the fact so then the fact is 10 – 5 = 5. Next you add back the 3. Which make the answer 8. (13 -5 = 8) This strategy is helpful for any fact that has 2 digits on top.

Another example: 15 – 8

Think 10 – 8 = 2 Then add back the 5 you covered up.

The answer is 7. 15 – 8 = 7