LCM Practice Worksheet is a ready-to-use excel template that enables the students and teachers to practice Least Common Multiple (LCM) sums and conduct tests.
The template consists of a macro and function that generates random numbers between a given range. Thus, this eliminates the manual work of a tutor to write different numbers and check the answers.
Furthermore, it consists of a printable version of the same so that you can use it when there are more students.
It also has an LCM Test Worksheet, where you can check the knowledge of your students by taking a test. With the help of predefined formulas, the template check answers by itself and also provides marks for correct answers.
What Is LCM?
LCM stands for Least Common Multiple. The LCM is the smallest positive integer which is divisible by both the given numbers.
How To Find LCM?
LCM can be found in 2 ways:
- By Finding Multiples.
- By Division Method.
LCM By Finding Multiples
In this method, you need to first find the multiples of each number. Identify the smallest common one among the set.
For this method, your multiplication tables must be thorough. To practice and learn multiplication tables you can use our ready-to-use Multiplication Tables 1-30 Excel Template.
Example: LCM of 4 and 8
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40…
Multiples of 8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80…
The multiples that are found in both are 8, 16, 24, 32, and 40. The lowest among them is 8. Hence, 8 is the LCM of 4 and 8.
LCM by Division Method
In this method, you need to divide the numbers by the lowest divisible number. Then take common out of both multiples.
Example: LCM of 12 and 40
12 = 2 x 2 x 3
40 = 2 x 2 x 2 x 5
2 is common 2 times. The third 2 is not common. Similarly, 3 and 5 also are not common.
Taking each individual number from the commons that are 2 X 2 and then multiplying the rest which is 3 from the number 12 and 2 and 5 from the number 40.
In short, the common from the 2 sets are taken only once and others. Multiplying all of them gives the LCM.
Hence, LCM = 2 x 2 x 2 x 3 x 5 = 120.
LCM Practice Worksheet Excel Template
We have created an easy-to-use LCM Practice Worksheet Excel Template with predefined formulas. You can use this sheet to practice LCM sums and also conduct a test without any manual hassle of writing the sums.
It also consists of a printable version which you can use to practice LCM sums on printed papers.
Download the sheet.
It will display a security warning at the top. Click on “Options”.
Select “Enable The Content” and click “OK”.
Let us understand the contents of the template in detail.
Contents of LCM Practice Worksheet Excel Template
This template consists of 4 sheets:
- LCM Calculator.
- LCM Practice Worksheet.
- Printable LCM Practice Worksheet.
- LCM Test Worksheet.
This is a basic LCM calculator. You can calculate LCM for 4 numbers. Usually, it is used for finding LCM of bigger numbers.
You can use this calculator to find LCM of 2, 3 or 4 numbers. For finding 2 numbers, insert 1 in the remaining two cells.
Similarly, for 3 numbers, insert 1 in the last box. The LCM function in excel is used to calculate the LCM.
LCM Practice Worksheet
This sheet consists of 2 sections. LCM sums and Range. You need to first insert the range and click on the “New Numbers” button.
With the help of a VBA code and a macro, the sheet generates a new combination of random numbers for LCM sums when you click on the button.
This practice worksheet consists of 3 tables with 60 LCM sums. 20 sums on each table. Once you finish these 60 sums, click on the button to generate new sums for further practice.
It will check the answers provided by the students/children. If the answer is correct it will display “Good Job” and if the answer is incorrect it will display “Try again!”.
Printable LCM Practice Worksheet
The template also consists of a printable version of the above LCM practice Worksheet. You can print multiple sheets with different sets of questions and give the same to your student/child.
The functioning of the sheet is the same as above. To simplify the process of checking, just insert the answers in the sheet and it will tell whether the answer is right or wrong.
LCM Test Worksheet
LCM test sheet consists of 60 sums. 1 mark each. Only 3 step process to take a test of LCM sums. Insert range, hide the below cells and give to the child. No manual writing of sums, no checking.
Similar to the practice worksheet, this sheet also has two sections. One is for sums and another for test results and range.
The sheet automatically calculates the marks according to the correct answers provided. You can also use this LCM test Worksheet as a printable version by adjusting the color scheme.
You can take the test in 2 ways:
- Giving similar papers to all. There is a chance of copying between students.
- Another way is by giving a different test sheet to each student.
To give a different test sheet to each student, follow the below-given steps:
- Click on the “New Numbers” button.
- Take the print.
- Repeat the process for the desired number of copies.
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