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Multiplication
Multiplication
Prime, Composite, Factors, and Multiples
Vocabulary
Area and Perimeter
100
April has 6 times as many Skittles as her younger sister Eva. Eva has 9 Skittles. How many Skittles does April have?
54
100

Luis multiplied 13 Legos into 7 equally-sized piles. How many Legos does Luis have in all? 

91 Legos

100
Is 17 prime or composite? List its factors to prove your answer.
Prime. Factors: 1,17 (or 1 X 17)
100
What is a prime number?
A number with exactly two factors, 1 and the number itself.
100
What is the formula for area? What is the formula for perimeter?
Area = Length X Width or A = L X W Perimeter = Side + Side + Side + Side (or Length + Length + Width + Width)
200
247 x 8
1,976
200

3 tens x 60 =

1,800

200
Is 14 prime or composite? List its factors to prove your answer?
Composite. Factors: 1, 2, 7, 14 or (1 x 14) and (2 x 7)
200
What is a composite number?
A number with more than two factors.
200
A square has a length of 8. What is its area?
64 square units
300
The school cooks made 45 cookies for each classroom. There are 13 classrooms in the building. How many cookies did the school cooks make?
585 cookies
300
145 divided by 4
36 r 1
300
List all the factors of 36 from least to greatest.
1, 2, 3, 4, 6, 9, 12, 18, 36
300
What is a multiple?
A number that can be divided by another number without a remainder. Or, a count-by, or number we say or write when counting by another number.
300
A rectangle has a length of 4 and a width of 7. What is its perimeter?
22 units
400
52 x 61
3,172
400

The area of a 12 feet long and 4 feet wide deck is?

48 square feet.

400
List the first eight multiples of both 4 and 5. Circle the common multiple(s).
4: 4, 8, 12, 16, 20, 24, 28, 32 5: 5, 10, 15, 20, 25, 30, 35, 40
400
What is a quotient?
The answer to a division problem.
400
A rectangle has a length of 3 and an area of 15. What is its width?
5 units
500
87 x 64
5,568
500

The perimeter of a 4 meter and 7 meter rectangle is? 

22 square meters

500
List the factors of both 4 and 16. Circle common factors.
4: 1, 2, 4 16: 1, 2, 4, 8, 16 Common factors: 1, 2, 4
500
What is a product?
The answer to a multiplication problem.
500
A rectangle has a length of 12 and a width of 9. Find its area and perimeter.
Area = 108 square units Perimeter = 42 units