Mathematics Magazine for Grades 1-12  

Grade 7

Theory:    Amount of Sales Tax

Many states and cities levy a sales tax on retail purchases. The sales tax is determined by finding a percentage of the purchase price. The percentage of tax called the tax rate varies between different cities and states.

If the sales tax is 6% and a $10.00 purchase is made, the sales tax is $10.00 6/100 or $0.60.

Solutions from the Previous Issue:

Calculate using the property of the powers:

1.         

Solution:

=

2.       

Solution:

3.       

Solution:

=

4.       

Solution:

=

5.       

Solution:

=

Proposed Exercises:

Solve the followings:

1.        |-27 – 7 | =

2.        |7| =

3.        |49 – (-36)|=

4.        |-15| =