Multiples
Which number is a multiple of 6?
A. 11
B. 18
C. 25
D. 31
Answer: B. 18
List all the factors of 18.
Answer: 1, 2, 3, 6, 9, 18
Solve: 23 × 4
Answer: 92
A rectangle has length 6 in and width 4 in. What is the area?
Answer: 24 square in
Start at 4. Add 4 each time. Give the first five terms.
Answer: 4, 8, 12, 16, 20
Which three numbers are multiples of 5?
A. 12
B. 35
C. 40
D. 67
E. 75
Answer: B, C, E
Is 31 prime or composite?
Answer: Prime
Solve: 144 ÷ 3
Answer: 48
What is the perimeter of a rectangle measuring 9 in by 2 in?
Answer: 22 in
Will the 50th term in the pattern above be even or odd?
Answer: Even
Is 48 a multiple of 4?
Answer: Yes
Which statement is true about 12?
A. It has only 2 factors
B. It has more than 2 factors
C. It is odd
D. It is prime
Answer: B
Which expression can be used to find 360 ÷ 4?
A. (320 ÷ 4) + (40 ÷ 4)
B. (36 ÷ 4) + (10 ÷ 4)
C. (400 ÷ 4) + (10 ÷ 4)
D. (360 ÷ 2) + (360 ÷ 1)
Answer: A
Find the area: length = 12 cm, width = 5 cm.
Answer: 60 square cm
Sarah jogs 7 miles. Ben jogs 9 times as many miles.
How many miles does Ben jog?
Answer: 63 miles
Which number is NOT a multiple of 3?
A. 21
B. 30
C. 44
D. 18
Answer: C. 44
Why is 49 composite?
Answer: It has more than 2 factors (1, 7, 49)
Use the distributive property to solve:
6 × 27
Answer:
6 x 27 = 6 x (20 + 7)
= (6 x 20) + (6 x 7)
= 120 + 42
= 162
Side lengths: 8 ft and 3 ft.
Find area and perimeter.
Answer:
Area = 24 square ft
Perimeter = 22 ft
A pattern starts at 10 and subtracts 2 each time.
What is the 6th term?
Answer: 0
List TWO multiples of 9 greater than 40.
Answer: Answers vary (e.g., 45, 54)
List ALL factors of 30.
Answer: 1, 2, 3, 5, 6, 10, 15, 30
Marcus solved 9 × 18 by doing:
9 × (10 + 8) = (9 × 10) + (9 × 8)
Find the product.
Answer: 162
A rectangle has a perimeter of 30 m. Two sides are 8 m each. What is the length of ONE of the other sides?
Answer: 7 m
A school has 85 chairs. They need 5 times as many for the assembly.
How many chairs needed?
Answer: 425