Worksheet on Methods of H.C.F.and L.C.M.

Practice the questions given in the worksheet on methods of hcf and lcm. We know full form of hcf is known as highest common factor and lcm is known as least common multiple.

I. Fill in the blanks:

(i) Even numbers are the multiples of ________.

(ii) 24 is an even number but 29 is an ________ number.

(iii) ________ is neither prime nor composite number.

(iv) ________ is the only even prime number.

(v) The smallest prime number is ________.

(vi) The smallest odd composite number is ________.

(vii) There are ________ prime numbers between 1 and 15.

II. Write the first four multiples of the following:

(i) 6

(ii) 8

(iii) 9

(iv) 12

(v) 15


III. Write the prime factors of the following:

(i) 50

(ii) 49

(iii) 70

(iv) 90

(v) 96


IV. Test whether the numbers in red color are the multiples of the numbers in blue color. Put (√) if yes, and (X) if no in the blank space.

(i) 40      3   ____

(ii) 75     5    ____

(iii) 49    6    ____

(iv) 99    9    ____

(v) 48     7   ____

(vi) 50     2   ____


V. Encircle the common multiples for each set of the numbers.

(i) 3, 6, 9, 12, 15, 21, 27, 36, 48, 45

6, 18, 24, 30, 36, 48, 54, 60

(ii) 2, 6, 8, 10, 14, 18, 20, 24, 30

5, 10, 15, 20, 30, 35, 55, 60, 75


VI. Find the number which is 2 more than the L.C.M. of each of the following.

(i) 4, 8, 14

(ii) 5, 7, 15

(iii) 25, 45, 15

(iv) 42, 48, 54


VII. Find the number which is 2 less than the H.C.F. of each of the following.

(i) 25, 45, 60

(ii) 70, 85, 45

(iii) 40, 120, 150

(iv) 15, 30, 45


VIII. Mike multiplied two numbers and got 64 as their products. If the L.C.M. of these two numbers are 32, find the H.C.F. of the numbers.

 

Answers for the worksheet on methods of hcf and lcm are given below.


Answers:


I. (i) 2

(ii) odd

(iii) 1

(iv) 2

(v) 2

(vi) 9

(vii) 6


II. (i) 6, 12, 18, 24

(ii) 8, 16, 24, 32

(iii) 9, 18, 27, 36

(iv) 12, 24, 36, 48

(v) 15, 30, 45, 60


III. (i) 2 × 5 × 5

(ii) 7 × 7

(iii) 2 × 5 × 7

(iv) 2 × 5 × 9

(v) 2 × 2 × 2 × 2 × 2 × 3


IV. (i) X

(ii) √

(iii) X

(iv) √

(v) X

(vi) √


V. (i) 6, 36, 48,    6, 36, 48

(ii) 10, 20, 30,    10, 20, 30


VI. (i) 58

(ii) 107

(iii) 227

(iv) 3026


VII. (i) 3

(ii) 3

(iii) 8

(iv) 13


VIII. 2




4th Grade Math Activities

From Worksheet on Methods of H.C.F.and L.C.M. to HOME PAGE




Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.



New! Comments

Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.

Share this page: What’s this?

Recent Articles

  1. Worksheet on Triangle | Homework on Triangle | Different types|Answers

    Jun 21, 24 02:19 AM

    Find the Number of Triangles
    In the worksheet on triangle we will solve 12 different types of questions. 1. Take three non - collinear points L, M, N. Join LM, MN and NL. What figure do you get? Name: (a)The side opposite to ∠L…

    Read More

  2. Worksheet on Circle |Homework on Circle |Questions on Circle |Problems

    Jun 21, 24 01:59 AM

    Circle
    In worksheet on circle we will solve 10 different types of question in circle. 1. The following figure shows a circle with centre O and some line segments drawn in it. Classify the line segments as ra…

    Read More

  3. Circle Math | Parts of a Circle | Terms Related to the Circle | Symbol

    Jun 21, 24 01:30 AM

    Circle using a Compass
    In circle math the terms related to the circle are discussed here. A circle is such a closed curve whose every point is equidistant from a fixed point called its centre. The symbol of circle is O. We…

    Read More

  4. Circle | Interior and Exterior of a Circle | Radius|Problems on Circle

    Jun 21, 24 01:00 AM

    Semi-circular Region
    A circle is the set of all those point in a plane whose distance from a fixed point remains constant. The fixed point is called the centre of the circle and the constant distance is known

    Read More

  5. Quadrilateral Worksheet |Different Types of Questions in Quadrilateral

    Jun 19, 24 09:49 AM

    In math practice test on quadrilateral worksheet we will practice different types of questions in quadrilateral. Students can practice the questions of quadrilateral worksheet before the examinations

    Read More