7th Grade Math Review 1

What is the Percent Change Formula?

• is/of = %/100

• difference/original

• difference/100

• none of these

How do you find the circumference of a circle?

• A = 3.14r²

• A = 3.14d

• C= 3.14d

• C= 3.14r²

How do you find the area of a circle?

• C= 3.14r²

• A= 3.14d

• C= 3.14d

• A= 3.14r²

If a circle's diameter is 14, what is its radius?

• 28

• 14

• 7

• 49

If a circle's radius is 9, what is its diameter?

• 9

• 4.5

• 81

• 18

A store has a discount on shoes based on a percentage of the price. Suppose one pair of shoes is marked down from $70 to $49. What is the price for a $110 pair of shoes after the discount is applied?

• $89

• $77

• $73.33

• $33

The tip for excellent service in a restaurant is $20 for every $100 of the meal. What is the total bill (meal plus tip) for a $60 meal?

• $12

• $48

• $72

• $120

What is the area of this circle? *Hint: There are 2 correct answers!*

• 1017.36

• 56.52

• 81π

• 254.34

What is the circumference of this circle?

• 56.52

• 1017.36

• 28.26

• 254.34

Which is an example of additive inverse?

• Jim eats 1/2 an apple and Ana eats the other half.

• Ana sees a balance of -$3 and deposits 7 in her bank account.

• Lee asks Jim to borrow $5 and then asks Jim for an additional $5.

• Lee pays Ana the $21.36 that he owes her.