WorksheetsREVISION
Total questions: 20
Worksheet time: 13mins
PRODUCT OF TWO COPRIMES IS 67THEN THEIR LCM IS
67
1
0
NONE
LCM(12,48,72) IS
12
72
144
NONE
I am a two digit prime number and the sum of my digits is 10. I am also one of the factors of 57. Who am I?
(a)
The number 87846 is divisible by
2 only
3 only
11 only
all of these
The factors of a number are 1, 2, 4, 5, 8, 10, 20, 40. What is the number?
80
20
40
120
Choose the correct list of the first five multiples of 10.
1, 10, 20, 30, 40
10, 20, 30, 40, 50
5, 10, 15, 20, 25
10, 30, 40, 50, 60
Find the LCM for 6, 18, and 36
6
18
36
108
Find the HCF for 18, 36, and 81
3
2
6
9
Find the highest common factor of 36 and 84.
5
6
4
12
Which of these numbers is not prime?
17
25
23
37
what are the first 5 prime numbers in ascending order?
2,3,4,5,11
1,2,3,5,11
2,3,5,7,11
2,3,11,7,5
2) Mrs. Evans has 120 crayons and 30 pieces of paper to give to her students. What is the largest number of students she can have in her class so that each student gets equal number of crayons and equal number of paper.
120 students
60 students
30 students
Rosa is making a game board that is 16 inches by 24 inches. She wants to use square tiles. What is the larges tile she can ued?
8
16
24
48
Find the prime factorization of 72
23 x 32
2 x 32 x 4
24 x 33
22 x 62
Which of these statements is true?
All numbers have 4 factors.
2 is a factor of every number.
1 is a factor of every number.
All odd numbers have an odd number of factors.
What is a factor?
a number or quantity that when multiplied with another produces a given number or expression.
a number that can be divided by another number without a remainder.
A Number
A number experssiona to solve a multiplication problem
SHOW ANSWER
The LCM of two co-prime numbers is
A prime number
A composite number
An even number
Odd number
The LCM of two numbers is 36, and one of the number is 12. Find the other number
2
3
4
6
The LCM of two numbers is 80, and the HCF is 8. If one of the numbers is 16, what is the other?
24
32
40
48
A common factor of two integers is always a ____________ of their HCF.
multiple
factor
(no answer)
