Equations

• When you come across a set of numbers in which one number is in parenthesis with another number right beside it with no space between it, you should multiply.

• 41(7) = 41 x 7

Suzie the Hairdresser

• Suzie is a hairdresser. She charges $15.00 for a haircut. On Monday, she did 6 haircuts. How much money did she make?

• Multiply 15 x 6

• Another way of writing this is 15(6)

• Or 6(15)

I Need More Information!

• James is a dog groomer who charges $17.00 to trim a dog. He made $68.00 on Monday. How many dog did he trim?

• 17 x a = 68

• a =

• 17(a)=68

• 17a=68

Try Something Different

• Sometimes a letter stands for something.

• Willy is paid $3.00 per week and he works for 2 weeks.

• The amount he is paid (the $3.00) is P.

• The weeks he works is W.

• Then W x P = his total pay

• W x P = 2 x 3

Try Something Different

• Sam has $5.00 in his piggy bank. Every week he saves $3.00 in allowance, Which of the equations below will help Sam determine how much money (s) is in his piggy bank after any number of weeks (w)?

• S = w + 5 s = 3w + 5

• S = 3w s = 5w + 3

Grand Finale

• Janice buys breakfast at the restaurant each day. The table shows the amount of money she spent over several weeks.

• A=10+W• A=10-w• A=10

Weeks (w) of school

Amount (A) spent

1 $10

5 $50

7 $70