1. Learn how to subtract positive and negative numbers.

2. The Beginning
Before we learn how to
subtract numbers, we have to
learn how to add the
numbers.

3. Positive Numbers
We will use black tiles to represent
positive numbers.

4. Negative Numbers
We will use red tiles to represent
negative numbers.

5. Let’s do some adding!
3 + (-3) = ?

6. If you guessed 0, than
your answer was correct!
The 3 and -3 equal each
other out.

7. I think we need some more
practice!
What is 4 + (-7) = ?

8. You’re right! The
answer is -3!

9. Now we will move to negatives!
We will first start by
subtracting positives.

10. What is 5-2=?

11. We can actually use the tiles to
flip around the problem.
5-2 = 5+(-2).

12. You are right! The
answer is 3!

13. Let’s try another one.
What is 7-2= ?
- =

14. 7-2 is equal to 7+(-2)

15. If you guessed 5, you
are correct!

16. We will try one more before
subtracting negatives.
What is 6-4= ?

17. 6-4 is equal to 6 + (-4).
So….

18. The answer is 2! Great
Job!

19. Subtracting Negatives
Subtracting a negative is like
adding a positive.

20. Let’s try some.
What is 4-(-1) = ?

21. 4-(-1) is equal to 4+1.

22. If you guessed 5, you are
right!

23. If you take out both
negatives and add an
addition sign, you will get
the right answer.

24. What is 5-(-2) = ?

25. If you guessed 7, you are correct!

26. What is 4-(-3) = ?

27. 4-(-3) is equal to 4+3.

28. You’re right! The
answer is 7!

29. Let’s try one more.
What is 2-(-1) = ?

30. Remember 2-(-1) is equal
to 2+1.

31. If you guessed 3, you
are correct!

32. You did excellent. Hopefully,
I have helped you grasp the
concept of subtracting small
numbers. 

33. Works Cited
When doing this project, I used
clipart on power point and I also
used my own pictures!

34. Chloe Andrews
Math 105