Factors
Which numbers are factors of both 16 and 40?
A) 1, 4, 8
B) 1, 2, 5
C) 1, 4, 10
D) 1, 8, 10
A) 1, 4, 8
because 1 x 16 = 16 and 1 x 40 = 40 and 4 x 4 = 16 and 4 x 10 = 40 and 8 x 2 = 16 and 8 x 5 = 40
Choose the list of numbers that are all multiples of 6.
A) 6, 15, 24, 33
B) 6, 16, 26, 36
C) 12, 18, 26, 34
D) 12, 24, 36, 48
D) 12, 24, 36, 48
because 6, 12, 18, 24, 30, 36, 42, 48
A shape pattern is generated by repeating the pattern of "Circle, Triangle". What shape would the 15th term be?
Circle because circle is every odd term.
Is 27 prime or composite?
Composite because it has more than 2 factors. 9 x 3 = 27 and 1 x 27 = 27 so the factors of 27 are 1, 3, 9, 27
Marcus and Sara are picking strawberries.
- Sara picks 9 ounces of strawberries.
- Marcus picks 3 times as many ounces as Sara.
How many total ounces of strawberries do they pick together?
Which number is a factor of both 18 and 48?
A) 4
B) 6
C) 9
D) 12
B) 6
because 6 x 3 = 18 and 6 x 8 = 48
Which number is a multiple of both 4 and 6?
A) 46
B) 10
C) 12
D) 18
C) 12
because 4, 8, 12, 16, 20 and 6, 12, 18, 24
A shape pattern is generated by repeating the pattern of triangle, square, square. Would shape would be the 5th term?
because Triangle (1), Square (2), Square (3), Triangle (4), Square (5).
Round 435,249 to the nearest hundred.
435,200
Penelope's favorite tree is 55 feet tall. She is 5 feet tall. How many times as tall as Penelope is the tree?
11 times as tall because 55 divided by 5 = 11
Which list has all of the factors of 54?
A) 1, 2, 3, 4, 6, 12, 27, 54
B) 1, 2, 3, 6, 9, 18, 27, 54
C) 1, 2, 4, 6, 9, 12, 27, 54
D) 1, 2, 4, 6, 12, 18, 27, 54
B) 1, 2, 3, 6, 9, 18, 27, 54
because 1 x 54 = 54, 2 x 27 = 54, 3 x 18 = 54, and 6 x 9 = 54
Which number is a multiple of both 3 and 4?
A) 7
B) 8
C) 24
D) 34
C) 24
because 3, 6, 9, 12, 15, 18, 21, 24 and 4, 8, 12, 16, 20, 24
A pattern starts with the number 10 and adds 5 each time. Which of these statements is true?
A) Every other number in the pattern is an even number.
B) All the numbers in the pattern are multiples of 10.
C) The numbers in the pattern always have a 5 in the ones place.
A) Every other number in the pattern is an even number.
because 10, 15, 20, 25, 30, 35, 40, 45, 50
Is 37 prime or composite?
Prime because it only has 2 factors: 1 and itself. 1 x 37 = 37. The factors are 1 and 37
True or False: (35 x 4) > (28 x 9)
False!
because 35 x 4 = 140 and 28 x 9 = 252 so it should be 140 < 252
Which numbers are factors of both 16 and 28?
A) 1, 3, 8
B) 1, 2, 8
C) 1, 4, 7
D) 1, 2, 4
D) 1, 2, 4
because 1 x 16 = 16 and 1 x 28 = 28 and 2 x 8 = 16 and 2 x 14 = 28 and 4 x 4 = 16 and 4 x 7 = 28
Which list of numbers that are all multiples of 9?
A) 1, 3, 9
B) 3, 9, 90
C) 45, 54, 63
D) 90, 99, 109
C) 45, 54, 63
because multiples are like skip counting & 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117
A student created a number generator machine. Randy inputs a rule and the results are below.
Input 3 --> Output 21
Input 5 --> Output 35
Input 7 --> Output 49
What rule did Randy input into the number machine?
Rule: x7
because 3 x 7 = 21 and 5 x 7 = 35 and 7 x 7 = 49
Is the equation true or false?
34 x 85 = (30 + 4) x (80 x 5)
False!
34 x 85 = (30 + 4) x (80 x 5) ---- 80 x 5 should be 80 + 5
Your teacher writes the multiplication expression 9 x 8 x 7 on the board. She asks students to give expressions that are equal to it. Which student(s) is/are correct?
Taylor: (7 x 8) x 9
Garrett: (9 x 8) x (2 + 6)
Rachel: (4 + 5) x (8 x 7)
Ariel: (5 x 8) + (4 x 7)
Taylor and Rachel are correct.
Which list has all of the factors of 20?
A) 1, 2, 3, 6, 10, 20
B) 1, 2, 4, 6, 10, 20
C) 1, 2, 3, 5, 10, 20
D) 1, 2, 4, 5, 10, 20
D) 1, 2, 4, 5, 10, 20
because 1 x 20 = 20 and 2 x 10 = 20 and 4 x 5 = 20
List the first twelve multiples of 7.
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84
A shape pattern is generated by repeating the pattern "circle, hexagon, triangle, rhombus".
This pattern continues for 100 terms. What shape would represent the 84th term?
rhombus
Jacob is thinking of a number. Read these clues about the number he is thinking of.
- It is composite.
- It is a factor of 24.
- It is even.
- It is less than 6.
What number is Jacob thinking of?
4!
It is composite. (1 x 4 = 4 and 2 x 2 = 4)
It is a factor of 24. (4 x 6 = 24)
It is even.
It is less than 6.
Solve the quotient of 198 and 6.
33