Online Work: Factors, GCF and Fractions

A jar contains 4 purple candies, 3 orange candies, and 7 green candies. What is the ratio of orange to green?

• 3 to 7

• 7 to 4

• 4 to 7

• 7 to 3

John has $300 to spend on groceries. He is buying vegetables for $150 and fruits for $50. If he buys both what will his change be?

• $100

• $200

• $250

• $50

What is ¼ as a percentage?

• 15%

• 25%

• 50%

• 75%

A pizza has 5 pieces. Sara eats 3 of the pieces. What fraction of the pizza did Sara eat?

• 3/5

• 2/5

• 5/5

• 1/5

Which TWO fractions are equal to 1?

• 2/2

• 1/5

• 10/10

• 5/2

Prime number is a number with exactly two factors (one and itself).

Which set of numbers is the first five prime numbers?

• 1, 2, 3, 4, 5

• 2, 3, 4, 5, 6

• 2, 3, 5, 7, 9

• 2, 3, 5, 7, 11

What are the factors of 21?

• 1, 21

• 1, 3, 7, 21

• 3, 7

• 1, 21

What is the greatest common factor of 8 and 24?

• 2

• 4

• 6

• 8

Which of the following equations describes the relationship between a and b?

• b = a +13

• b = a +5

• b = a +18

• b = a +14

Find the average/mean of the following numbers.

4, 12, 8, 16, 20

• 12

• 10

• 14

• 16