REINFORCEMENT QUIZ

A bookshelf is 2/3. If it can hold 18 books, how many books are on it?

• 12 books

• 10 books

• 16 books

You have 3/4 of a pizza. You share 1/2 of it with a friend. How much do you give away?

• 3/6 pizza

• 3/8 pizza

• 3/2 pizza

Is 15 a composite number?, Why?

• No.

  It has 2 factors: 1 and 15

• Yes,

  it has more than two factors: 1, 3, 5, 15

List prime numbers between 20 and 30

• 21, 23, 26, 29

• 21, 23, 25, 27, 29

• 23, 29

Is 37 a prime number? Why?

• Yes,

  It has only 1, 37 as factors

• No,

  It has 1, 3, 7, 37, as factors

A bookshelf is 5 1/3 feet tall. If it's placed on a base that's 1 3/4 feet high. What's the total height?

• 6 7/12

• 6 4/12

• 6 13/12

A tank can hold 5 2/3 liters of water. If 2 3/4 liters are already in the tank, how much more water can be added?

• 3 1/2

• 2 11/12

• 2 1/12

Lisa saves $10 in Jan., $20 in Feb., $40 in March. How much will she save by April?

• $60

• $80

• $100

A library has 4,827 books. Round it to the nearest hundred.

• 5,000 books

• 4,800 books

• 4,900 books

A number rounds to 6,000 when rounded to the nearest thousand, but 5,900 when rounded to the nearest hundred.

What could the number be?

Explain your reasoning.