Factor Pairs
What are the factor pairs of 12?
1 and 12, 2 and 6, 3 and 4)
What are the first 5 multiples of 4?
4, 8, 12, 16, 20
Is 7 prime or composite? Why?
Prime
What’s the area of a rectangle that is 5 units wide and 4 units tall?
20 units
What’s the perimeter of a rectangle that is 6 units long and 4 units wide?
20 units
What are the factor pairs of 16?
1 and 16, 2 and 8, 4 and 4
Is 36 a multiple of 6?
Yes
Is 12 prime or composite? Why?
Composite
A rectangle is 3 cm wide and 9 cm long. What’s its area?
27 cm
A rectangle is 10 cm long and 5 cm wide. What’s the perimeter?
30 cm
Find a number that has the factor pairs: (1, 10), (2, 5).
10
Is 73 a multiple of 12?
No
What is the first prime number after 10?
11
Find the missing side: Area = 56 sq units, one side = 7 units.
8 units
Find the missing side: Perimeter = 26 units, one side = 5.
Missing side = 8 units
True or False: 6 has more factor pairs than 8.
False
What is the 7th multiple of 8?
56
Name three composite numbers less than 20.
4, 6, 8, 9, 10, 12, 14, 15, 16, 18
True or False: A rectangle with sides 6 and 10 has the same area as one with sides 12 and 5.
True
True or False: A square has the same perimeter as a rectangle with the same area.
False
List all the factor pairs of 24.
1 and 24, 2 and 12, 3 and 8, 4 and 6
What are the first 10 multiples of 9?
9, 18, 27, 36, 45, 54, 63, 72, 81, 90
List the first 8 prime numbers
Draw a rectangle with an area of 36 square units. List 2 possible side lengths.
6 and 6, or 9 and 4
Create a rectangle with a perimeter of 30 units. What could the side lengths be?
1 and 14, 2 and 13, 5 and 10, 6 and 9