Prime Time Practice 1 | Homework Practice

Concept Check

Question 1mcq

Which is the prime factorisation of

45

?

A.

3^2\times 5

B.

45\times 1

C.

22\times 2

only

D.

46

Question 2mcq

Which option best applies the skill 'Identify composite numbers' from Prime Time?

A.Choose the largest number without checking the rule.

B.Use the rule carefully and check that the answer fits the given situation.

C.Ignore the given information.

D.Use an unrelated operation.

Question 3mcq

Which number is a factor of

72

?

A.

73

B.

71

C.

18

D.

19

Question 4mcq

Which is the prime factorisation of

18

?

A.

18\times 1

B.

9\times 2

only

C.

19

D.

2\times 3^2

Question 5mcq

Which is the prime factorisation of

24

?

A.

2^3\times 3

B.

24\times 1

C.

12\times 2

only

D.

25

Apply and Solve

Question 6mcq

Which option best applies the skill 'Identify composite numbers' from Prime Time?

A.Choose the largest number without checking the rule.

B.Use the rule carefully and check that the answer fits the given situation.

C.Ignore the given information.

D.Use an unrelated operation.

Question 7mcq

Which number is a factor of

45

?

A.

46

B.

44

C.

5

D.

6

Question 8mcq

Which is the prime factorisation of

60

?

A.

60\times 1

B.

30\times 2

only

C.

61

D.

2^2\times 3\times 5

Question 9mcq

Which is the prime factorisation of

72

?

A.

2^3\times 3^2

B.

72\times 1

C.

36\times 2

only

D.

73

Question 10mcq

Which option best applies the skill 'Identify composite numbers' from Prime Time?

A.Choose the largest number without checking the rule.

B.Use the rule carefully and check that the answer fits the given situation.

C.Ignore the given information.

D.Use an unrelated operation.