1. Basic Subtraction on MathLine

2. MathLine will enrich: Introductory subtraction Subtraction Word Problems Practicing subtraction Memorizing subtraction facts Playing games involving subtraction

3. Minus Take away Subtract Less than And many more Keep in mind there are many words to describe subtraction:

4. No matter what the language is they all can be done on MathLine

5. Try this word problem…

6. If you have 7 rubber balls and you lose 3, how many balls do you have left?

7. Always start any problem by clearing the rings to the right

8. Count and move 7 rings Then subtract 3 rings

9. Count out seven rings Subtraction – Step 1 7 7 - 3 = 7 - 3 =

10. Take away three rings Subtraction – Step 2 7 – 3 = 7 – 3 =

11. Count out nine rings Subtraction – Step 1 9 9 - 6 = 9 - 6 =

12. Take away six rings Subtraction – Step 2 9 – 6 = 9 – 6 =

13. 3 rings left. Subtraction – Step 3 9 – 6 = 3 9 – 6 = 3

14. See answer on MathLine Subtraction – Step 4 9 – 6 = 3 9 – 6 = 3

15. Count out seventeen rings Subtraction – Step 1 17 17 – 8 = 17 – 8 =

16. Take away eight rings Subtraction – Step 2 17 – 8 = 17 – 8 =

17. 9 rings left. Subtraction – Step 3 17 – 8 = 9 17 – 8 = 9

18. See answer on MathLine Subtraction – Step 4 17 – 8 = 9 17 – 8 = 9