Subscribe to our YouTube channel for the latest videos, updates, and tips.


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 Average | Word Problem on Average | Questions on Average

    May 19, 25 02:53 PM

    Worksheet on Average
    In worksheet on average we will solve different types of questions on the concept of average, calculating the average of the given quantities and application of average in different problems.

    Read More

  2. 8 Times Table | Multiplication Table of 8 | Read Eight Times Table

    May 18, 25 04:33 PM

    Printable eight times table
    In 8 times table we will memorize the multiplication table. Printable multiplication table is also available for the homeschoolers. 8 × 0 = 0 8 × 1 = 8 8 × 2 = 16 8 × 3 = 24 8 × 4 = 32 8 × 5 = 40

    Read More

  3. How to Find the Average in Math? | What Does Average Mean? |Definition

    May 17, 25 04:04 PM

    Average 2
    Average means a number which is between the largest and the smallest number. Average can be calculated only for similar quantities and not for dissimilar quantities.

    Read More

  4. Problems Based on Average | Word Problems |Calculating Arithmetic Mean

    May 17, 25 03:47 PM

    Here we will learn to solve the three important types of word problems based on average. The questions are mainly based on average or mean, weighted average and average speed.

    Read More

  5. Rounding Decimals | How to Round a Decimal? | Rounding off Decimal

    May 16, 25 11:13 AM

    Round off to Nearest One
    Rounding decimals are frequently used in our daily life mainly for calculating the cost of the items. In mathematics rounding off decimal is a technique used to estimate or to find the approximate

    Read More