myTestBook.com Math Reading Science Practice Test for Grade 1, 2, 3, 4 & 5    
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Grade: 5,    Subject: Math,    Topic: Multiples Lowest Common Multiple (LCM)
Question 1:
What is the least common multiple of 4, 5, and 16?

3045

5680
 
Question 2:
Find the least common multiple of 15 and 20

3040

6080
 
Question 3:
Which list shows the factors of 32?

1, 2, 4, 81, 3, 6, 8

1, 5, 7, 91, 2, 4, 6
 
Question 4:
Select the CORRECT statement.

A composite number is any number that has less than two factors.A composite number has only two factors, one and itself.

A composite number is any number that has more than two factors.A prime number is any number that has more than two factors.
 
Question 5:
Find the least common multiple of 3, 9, 21?

4563

4256
 
Question 6:
The prime factors of 24 are ____________.

2 × 2 × 2 × 22 × 2 × 2 × 5

2 × 3 × 3 ×2 × 2 × 2 × 3
 
Question 7:
What is the least common multiple of 9 and 12?

1836

4563
 
Question 8:
Which of these is a prime number?

1918

2122
 
Question 9:
Lauren has Taekwondo class every 3 days and guitar lesson every 5 days. If she had both a Taekwondo class and a guitar lesson on Monday, in how many days will she have both on the same day again?

1210

1516
 
Question 10:
Which list shows the factors of 28?

1, 2, 3, 5, 127, 14, 21

2, 7, 14, 181, 2, 4, 7, 14, 28
 
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