1. 6.1 & 5.7 6.1 – Variables and Expressions
5.7 – Multiplying 3-Digit by 1-Digit Numbers

2. 6.1 – Variables and Expressions
Value of 15 + D
15 + D D
D is a variable. It is a symbol that stands for a number D is an algebraic expression.

3. Variable n A variable is a symbol that stands for a number.
Algebraic expression -
A Tae Kwon Do class has 23 people. If n more people sign up, how many people will be taking the class?
23 + n n

4. Practice
Fill in the table:
C + 8 C

5. Practice
Fill in the table:
7 X H H

6. Practice
Fill in the table: 40 55 62 X
X – 5

7. 5.7 – Multiplying 3-Digit by 1-Digit Numbers
Review: Multiply 2-Digit by 1-digit Numbers:
45 x 6 =
56 x 4 =

8. 5.7
Maryam has 7 jars she wants to fill with pennies. If she puts 452 pennies in each jar, how many pennies does she have all together?

9. 5.7 – Practice
453 x 3 =
895 x 6 =
923 x 4 =

10. On your own
Create a multiplication story problem using the numbers 234 and 5 and then solve.

11. Homework
Page #7-14
Page 128 = #6, #7, and #11