myTestBook.com Math Reading Science Practice Test for Grade 1, 2, 3, 4 & 5    
  you are taking the following test:

 
Grade: 5,    Subject: Math,    Topic: Multiples Lowest Common Multiple (LCM) Prime Number
Question 1:
What is the least common multiple of 9 and 12?

1845

3627
 
Question 2:
Which option shows common multiples of 15 and 20?

60, 12075, 90

80, 12060, 105
 
Question 3:
What is the Least Common Multiple of 15 and 30?

1545

6030
 
Question 4:
Which option shows the prime factorization of of 12?

2 × 2 × 32 × 3 × 4

3 × 3 × 42 × 2 × 2
 
Question 5:
Which is a prime number?

45

68
 
Question 6:
Which option shows the prime factorization of 30?

2 × 2 × 52 × 3 × 5

2 × 3 × 62 × 4 × 5
 
Question 7:
Which number is neither a prime nor a composite number?

515

12
 
Question 8:
Choose the CORRECT answer.

3 and 6 are prime numbers5 and 8 are prime numbers

4 and 11 are composite numbers8 and 15 are composite numbers
 
Question 9:
Which option shows factors of 16?

1, 2, 4, 8, 161, 5, 10, 15, 20

1, 3, 6, 12, 141, 2, 5, 10, 15
 
Question 10:
Find the GCF of 36 and 54.

3618

3072
 
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