Free Printable Unknown Factor Blastoff 1

1.

z x 3 = 12 z=?

a)

z = 2

b)

z = 3

c)

z = 4

d)

z = 5

2.

n x 8 = 16 n = ?

a)

n = 2

b)

n = 24

c)

n = 3

d)

n = 16

3.

m x 6 = 36 m=?

a)

m=5

b)

m=6

c)

m=4

d)

m=2

4.

3 x h = 15 h=?

a)

h=3

b)

h=4

c)

h=5

d)

h=10

5.

s x 6 = 42 s=?

a)

s=5

b)

s=6

c)

s=7

d)

s=8

6.

p x 10 = 90 p=?

a)

p=2

b)

p=5

c)

p=8

d)

p=9

7.

3 x k = 21 k=?

a)

k=6

b)

k=4

c)

k=18

d)

k=7

8.

32 = 8 x f f=?

a)

f=4

b)

f=6

c)

f=8

d)

f=10

9.

8 x g = 48 g=?

a)

g=3

b)

g=4

c)

g=5

d)

g=6

10.

4 x s = 24

a)

s=4

b)

s=6

c)

s=8

d)

s=10

11.

Solve for the unknown

24÷_____=4

a)

3

b)

2

c)

6

d)

5

12.

Solve for the unknown

4x____=32

a)

7

b)

8

c)

4

d)

6

13.

Solve for the unknown

27÷___=9

a)

2

b)

4

c)

5

d)

3

14.

Solve for the unknown

___x6=18

a)

3

b)

2

c)

1

d)

4

15.

Solve for the unknown

3x___=30

a)

10

b)

9

c)

7

d)

8

16.

Solve for the unknown

36÷___=4

a)

9

b)

6

c)

5

d)

3

17.

Solve for the unknown

7x___=21

a)

2

b)

4

c)

3

d)

1

18.

Solve for the unknown

56÷___=8

a)

7

b)

6

c)

5

d)

8

19.

Solve for the unknown

___x5=35

a)

5

b)

3

c)

4

d)

7

20.

Solve for the unknown

42÷___=7

a)

5

b)

6

c)

7

d)

8

21.

a)

Jessica has a tray with 42 cookies arranged in rows. There are 6 rows of cookies. How many cookies are in each row?

b)

Jessica has a tray with 64 cookies arranged in rows. There are 8 cookies in each row. How many rows of cookies are there?

c)

Jessica has a tray of cookies with 8 rows of cookies. There are 8 cookies in each row. How many cookies does Jessica have?

d)

Jessica has a tray of cookies with 6 rows of cookies. There are 8 cookies in each row. How many cookies does Jessica have?

22.

a)

3 X 7

b)

3 X 8

c)

4 X 6

d)

4 X 7

23.

Which of these expressions is another way to write 5 X 3?

a)

3 + 3 + 3 + 3 + 3

b)

5 + 5 + 5 + 5

c)

3 + 3 + 3

d)

5 + 5 + 5 + 5 + 5

24.

A multiplication problem is shown.

5 multiplied by ___ equals 15.

What number goes in the blank?

a)

2

b)

3

c)

5

d)

10

25.

4 x ___ = 16

a)

4

b)

5

c)

6

d)

7

26.

____ x 3 = 21

a)

5

b)

6

c)

7

d)

8

27.

18 = 2 x ___

a)

6

b)

7

c)

8

d)

9

28.

5 x ___ = 25

a)

4

b)

5

c)

6

d)

7

29.

Write an equation for this array:
oooooo
oooooo
oooooo

a)

3 x 5 =15

b)

4 x 3 =12

c)

3 x 6 = 18

d)

3 x 7 = 21

30.

Write an equation for this array:
xxxx
xxxx
xxxx
xxxx
xxxx

a)

5 x 3 = 15

b)

4 x 4 = 16

c)

4 x 3 = 12

d)

5 x 4 = 20

31.

What is the fact family for the following equation:
4 x 6 = 24

a)

3, 2, 6

b)

6, 3, 18

c)

4, 5, 20

d)

4, 6, 24

32.

_____ x 3 = 15

a)

4

b)

5

c)

6

d)

7

33.

What is the division sentence for the multiplication sentence:
9 x 3 = 27

a)

3 / 27 = 9

b)

27 x 3 = 9

c)

3 x 9 = 27

d)

27 / 3 = 9

34.

Which 2 factors have a product of 12?

a)

a) 6 groups of 4

b)

b) 5 groups of 1

c)

c) 3 groups of 4

d)

d) 3 groups of 3

35.

Which 2 factors have a product of 24?

a)

a) 6 groups of 3

b)

b) 5 groups of 2

c)

c) 3 groups of 8

d)

d) 3 groups of 6

36.

Which 2 factors have a product of 25?

a)

a) 5 groups of 3

b)

b) 5 groups of 2

c)

c) 5 groups of 4

d)

d) 5 groups of 5

37.

Which 2 factors have a product of 9?

a)

a) 3 groups of 3

b)

b) 5 groups of 2

c)

c) 3 groups of 8

d)

d) 3 groups of 6

38.

Which 2 factors have a product of 20?

a)

a) 2 groups of 3

b)

b) 5 groups of 4

c)

c) 3 groups of 3

d)

d) 2 groups of 6

39.

Which 2 factors have a product of 18?

a)

a) 4 groups of 3

b)

b) 5 groups of 2

c)

c) 3 groups of 2

d)

d) 2 groups of 9

40.

Which 2 factors have a product of 30?

a)

a) 2 groups of 3

b)

b) 5 groups of 6

c)

c) 3 groups of 3

d)

d) 4 groups of 6

41.

Which 2 factors have a product of 4?

a)

a) 2 groups of 3

b)

b) 1 group of 2

c)

c) 4 groups of 0

d)

d) 2 groups of 2

42.

Which 2 factors have a product of 15?

a)

a) 6 groups of 3

b)

b) 5 groups of 3

c)

c) 3 groups of 4

d)

d) 3 groups of 2

43.

What are 2 factors of 14?

a)

2 groups of 7

b)

2 groups of 6

c)

2 groups of 2

d)

2 groups of 5

44.

What are 2 factors of 10?

a)

2 groups of 5

b)

2 groups of 6

c)

2 groups of 8

d)

2 groups of 10

45.

What are 2 factors of 16?

a)

3 groups of 2

b)

6 groups of 2

c)

4 groups of 4

d)

2 groups of 4

46.

9 X n = 36

a)

4

b)

3

c)

5

d)

6

47.

8 X ___ = 24

a)

4

b)

3

c)

5

d)

6

48.

n X 11 = 66

a)

7

b)

5

c)

6

d)

8

49.

8 X a = 72

a)

9

b)

8

c)

6

d)

10

50.

12 X ___ = 60

a)

4

b)

6

c)

8

d)

5

51.

n X 3 = 18

a)

7

b)

5

c)

6

d)

4

52.

8 X ___ = 64

a)

8

b)

7

c)

9

d)

10

53.

__ X 5 = 45

a)

8

b)

7

c)

9

d)

4

54.

CHALLENGE:
What is 30 X 8?

a)

2,400

b)

24

c)

240

d)

210

55.

CHALLENGE:
What is 30 X 9 =

a)

240

b)

27

c)

2,700

d)

270

56.

Tom has 12 ears of field corn to make table decorations. He arranges them in equal groups. Which sentences could Tom use to describe his groups? Select all that are correct.

a)

Tom arranged 1 group of 10 ears.

b)

Tom arranged 2 groups of 4 ears.

c)

Tom arranged 3 groups of 4 ears.

d)

Tom arranged 6 groups of 2 ears.

e)

Tom arranged 4 groups of 2 ears.

57.

Jenna has 24 flowers. She arranges them in vases with an equal number of flowers in each vase. Which sentences could Jenna use to describe her flowers? Select all that are correct.

a)

Jenna arranged 3 flowers in each of 9 vases.

b)

Jenna arranged 6 flowers in each of 3 vases.

c)

Jenna arranged 4 flowers in each of 6 vases.

d)

Jenna arranged 8 flowers in each of 3 vases.

e)

Jenna arranged 5 flowers in each of 5 vases.

58.

An equation is shown. $8\times5=5\times\left[\ \ \right]$
Use the commutative property of multiplication to find the missing factor. What is the missing factor?

a)

5

b)

40

c)

85

d)

8

59.

Which of the following expressions is equivalent to $5\times4$

a)

$5+5$

b)

$4\times5$

c)

$5+4$

d)

$5-4$

60.

Which of the following contexts does the expression $14\div2$ represent?

a)

14 pens arranged in 14 equal groups

b)

2 pens arranged in 14 equal groups

c)

14 pens arranged in 2 equal groups

d)

2 pens arranged in 2 equal groups

61.

Which of the following contexts does the expression $12\div3$ represent?

a)

12 books arranged equally on 3 shelves

b)

12 books arranged equally on 12 shelves

c)

3 books arranged equally on 12 shelves

d)

3 books arranged equally on 3 shelves

62.

Craig visits the Florida Railroad Museum and takes photos of engines. He arranges his photos into an array with 5 equal rows of 9 photos. How many photos are in Craig's array?

a)

5

b)

9

c)

45

d)

59

63.

Which is the missing value?
$6\times8=\left(4\times8\right)+\left(?\times8\right)$

a)

8

b)

4

c)

6

d)

2

64.

Which equation is a related multiplication equation to $20\div5=\left[\ \ \right]$

a)

$\left[\ \ \right]\times5=20$

b)

$20\times5=\left[\ \ \right]$

c)

$\left[\ \ \right]=5\times20$

d)

$20\times\left[\ \ \right]=5$

65.

Which equation is a related multiplication equation to $24\div8=\left[\ \ \right]$

a)

$\left[\ \ \right]\times8=24$

b)

$24\times8=\left[\ \ \right]$

c)

$\left[\ \ \right]=8\times24$

d)

$24\times\left[\ \ \right]=8$

66.

Twenty-four students are going to the zoo. They are going in 4 equal groups. How many students are in each group?

a)

8

b)

4

c)

6

d)

12

67.

Manny has 28 chapters in a book to read. He reads 7 chapters each week. How many weeks will it take Manny to read the book?

a)

5 weeks

b)

4 weeks

c)

9 weeks

d)

2 weeks

68.

What is the value of the unknown number in the equation?
$36=?\times9$

a)

4

b)

8

c)

6

d)

2

69.

What is the unknown number in the equation?
$?\div7=6$

a)

30

b)

15

c)

42

d)

24

70.

Which division equation could be solved using the equation? $4\times?=12$

a)

$?\ \div\ 4=12$

b)

$12\div\ ?=4$

c)

$4\ \div\ ?=12$

d)

$4\ \div\ 12=?$

71.

What is the value of the unknown in the equation $30\div\ ?\ =6$

a)

4

b)

5

c)

6

d)

7

72.

Select all the expressions that could be used to find $4\times9$

a)

$\left(2\times9\right)+2$

b)

$\left(2\times9\right)+\left(2\times9\right)$

c)

$\left(2\times9\right)\times2$

d)

$\left(2\times9\right)\times\left(2\times9\right)$

e)

$9\times4$

73.

18 = 2 x ___

a)

6

b)

7

c)

8

d)

9

74.

4 x ___ = 16

a)

4

b)

5

c)

6

d)

7

75.

____ x 3 = 21

a)

5

b)

6

c)

7

d)

8

76.

5 x ___ = 25

a)

4

b)

5

c)

6

d)

7

77.

_____ x 3 = 15

a)

4

b)

5

c)

6

d)

7

78.

9 X n = 36

a)

4

b)

3

c)

5

d)

6

79.

n X 11 = 66

a)

7

b)

5

c)

6

d)

8

Unknown Factor Blastoff 1

Total questions: 79

Worksheet time: 1hrs 19mins

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