OA.4 Review

OA.4 Review

by Cameo McIntyre

​What are factors and multiples?

• ​Factors are numbers multiplied together to get a product (Example: 7 x 54=35)

• ​Multiples are products of a given number and another whole numbers. ( Example: 7, 14, 21, 28...)

Multiple Choice

What is a factor?

• numbers multiplied together to get another number

• products of a number and another given whole number

Multiple Choice

What is a multiple?

• numbers multiplied together to get another number

• products of a number and another given whole number

​Multiples vs Factors

​What did you learn about factors and multiples from the video?

​

​Give an example of the multiples of 8. (skip counting)

​

​Give an example of the factors of 48. (factor pairs)

Multiple Choice

Which of the following is an example of multiples of 8?

• 1, 2, 4, 8

• 1x8=8

  2x4=8

• 8, 16, 24, 32...

• 8x1=8

  4x2=8

Multiple Choice

Which of the following includes the factors of 48?

• 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

• 1, 48

• 1, 2, 6, 8, 12

• 1, 2, 3, 4, 48

​Prime and Composite

• ​A prime number is a number with only two factors: one and itself. (Example: 5- 1 and 5 are factors of 5)

• ​A composite number is a number that has more than two factors (example: 25-1, 5, and 15 are factors of 25)

​Prime and Composite

​What did you learn about prime and composite numbers from the video?

​Look at the following examples are determine whether they are prime or composite numbers:

​1) 15

​2) 9

​3) 23

​4) 32

Multiple Choice

Determine whether the following number is prime or composite:

15

• prime

• composite

Multiple Choice

Determine whether the following number is prime or composite:

9

• prime

• composite

Multiple Choice

Determine whether the following number is prime or composite:

23

• prime

• composite

Multiple Choice

Determine whether the following number is prime or composite:

32

• prime

• composite

​Math Test Taking Strategies

Multiple Choice

Jeremy noticed that the final scores for both the Home and Visitors teams were prime numbers in last week’s basketball game. Which scoreboard shows the final score of Jeremy’s game?

• HOME         11  VISITORS     25

• HOME         27 VISITORS     13

• HOME         23    VISITORS    29

• HOME         31 VISITORS    15

Multiple Choice

Sarah wants to make a rectangular patio with square stones in her backyard. If she uses 24 stones, she can make 4 rectangular designs as shown in the picture.

• 40

• 43

• 45

• 49

Multiple Choice

Jessica needs a taxi. The taxi driver told her that his car number was not a prime number. Which taxi could be the taxi that Jessica needs to get into?

• 36

• 43

• 29

• 17

Multiple Choice

This year, fall break will start on a Thursday in October. The date is a prime number. What could be the date that fall break will start?

• October 4

• October 11

• October 18

• October 25

Multiple Choice

Which of the following lists all of the prime numbers on the clock face?

• 1, 3, 5, 7, 11 

• 3, 5, 7, 9, 11

• 2, 3, 7, 9

• 2, 3, 5, 7, 11

Multiple Choice

A bakery wants rectangular boxes for its cupcakes. The bakery wants to put the same number of cupcakes into at least two different sizes of rectangular boxes. The boxes for 4 cupcakes are shown in the picture.

• 10

• 13

• 16

• 18

Multiple Choice

A 4^th grade group of students went to Raleigh for a guided tour. When they got to the Legislative Building they were divided into equal groups. There were 6 students in every group. Which of the following could be the total number of students visiting Raleigh?

• 48

• 26

• 33

• 47

Multiple Choice

At the fair, there were three lines with the same number of people in each line waiting to get on the ferris wheel. Which could be the number of people in each line?

• 32

• 35

• 37

• 39

Multiple Choice

The equation shows a number multiplied by 7.

n x 7 = 

Which of these is true about the result?

• It is a factor of 7. 

• It is always a composite number.

• It is a multiple of 7. 

• It is always a prime number.

Multiple Choice

Marie has a set of cards. When divided into 9 stacks, there are no cards left over. What must be true about the number of cards in the set?

• The number of cards is a multiple of 9. 

• The number of cards is a factor of 9.

• The number of cards is an odd number.

• The number of cards is even number.