Back

### Connection

Have you ever been told not to use your fingers for counting, or told someone else to avoid it? Counting on your fingers is actually an important part of developing math skills. Here is a great article by Jo Boaler on the importance of counting on fingers as one develops Math skills: Why Kids Should Use Their Fingers in Math Class.

Addition is simply combining two groups of things together and has application in every part of life. When adding two small things, this can be done relatively easily and often without having to write anything down. When we start adding large numbers, we have more steps to take in order to help us keep track of our addition.

1. Stack the numbers in columns according to place value.
2. Add in columns (place value) starting on the right and moving left.
3. Carry groups of 10 to the column to the left.

### Practice Problems

Evaluate the following expression:
1. $$4 + 3$$ = ? (
Solution
Solution:
7
)
2. $$2 + 7$$ = ? (
Solution
Solution:
9
)
3. $$7 + 9$$ = ? (
Video Solution
Solution: 16
Details:

(Video Source | Transcript)
)
4. $$0 + 4$$ = ? (
Solution
Solution: 4
Details: In addition, a zero represents an empty or null value. If then, zero is an empty value, the four ones added to zero is 4.
)
5. $$5 + 8$$ = ? (
Solution
Solution: 13
Details: We can think of the 8 in this problem as five ones and three ones. We can think about our problem as having two fives and one three. Two fives give us 10. Plus three ones is 13. Or
$$5 + 8$$

Rename $$8$$ to $$5 + 3$$
$$5 + 5 + 3$$

Group the two $$5$$'s to make $$10$$.
$$10 + 3$$

$$10 + 3 = 13$$
)
6. $$9 + 8$$ = ? (
Video Solution
Solution: 17
Details:

(Video Source | Transcript)
)

## Need More Help?

1. Study other Math Lessons in the Resource Center.
2. Visit the Online Tutoring Resources in the Resource Center.