Counting 1 to 100 Using Abacus for Class 1 Maths
The students will learn to count 2digit numbers and onedigit numbers using Abacus. Also, they can use the Abacus to add and subtract numbers. Students can also observe colourful number patterns in Abacus; for children, it is effortless to understand place value using Abacus.
What Is Abacus?
Earlier time ago, people used Abacus for counting numbers. It is like a calculator. We can make additionsubtraction by using an abacus. But do you know, this calculator will work without a battery!!!
There are many types of Abacus, but most schools use a simple abacus. There are 10 strings/rods in a simple abacus. Each rod has 10 beads.
Strings/Rod:
Straight piece of wood or metal.
Beads:
A bead is a small object with a hole in it.
Tens and Ones by Using Abacus:
We can represent tens and one's place of the number by using Abacus.
Examples:
We can represent the number 37 by using Abacus as:From the bottom, the first rod/string represents One's place digit. The second rod/string represents the Tens place digit. First, move all the beads to the left side. We move 7 beads to the right to represent one place number. For tens place number, we move 3 beads to the right side. In this way, we can represent any number by Abacus.
Two Digit Addition in Abacus:
We can make an addition by using Abacus.
Examples:
Do the addition: 56 + 23 = ?From the bottom, move 6 beads to the right side in the first rod and 5 beads in the second rod. Then we have to add 23. So, move 3 beads in the first rod and 2 beads in the second rod to the right side. Now count all beads that are on the right side. There are 7 beads in the second rod and 9 beads in the first rod. So, the addition is 79.
Subtraction in Abacus:
We can make subtraction by using Abacus.
Examples:
Do the Subtraction: 78 – 46 =?
From the bottom, move 8 beads to the right side in the first rod and 7 beads
in the second rod. Then we have to subtract 46. So, from the 7 beads move 4
beads to the left side in the second rod. From the 8 beads move 6 beads to
the left side of the first rod. Now count all beads that are on the right
side. There are 3 beads in the second rod and 2 beads in the first rod. So,
the subtraction is 32.
This way, we can easily make addition and subtraction using the Abacus.
Counting 1 to 100
Question 1
Count the Beads of the Abacus. Count and Write the Numbers on Beads Starting From 1 in the Correct Order. And Find How Many Beads Are There in the Abacus.
Answers 2:
Count the beads of the Abacus. Count and write the numbers on beads starting from 1 in the correct order. And find how many beads are there in the Abacus.
There is a total of 100 beads in the Abacus. The correct answer is:
2digit number
Question 2
Write the TwoDigit Number Represented by the Following Abacus.
Answers 2:
Write the twodigit number represented by the following Abacus. Starting from the bottom,
The number of beads in the first rod = One place digit
The number of beads in the second rod = Tens place digit
The correct answer is:
Number Patterns
Question 3:
Complete the Pattern in the Beads of the Abacus.
Answers 3:
Complete the pattern in the beads of the Abacus.

In the 1st string = 1 bead, In the 2nd string = 2 beads,
In the 3rd string = 3 beads, In the 4th string = 4 beads.
Follow the same pattern. The correct answer is: 
In the 1st string = 1 bead, In the 2nd string = 2 beads,
In the 3rd string = 1 bead, In the 4th string = 2 beads.
Follow the same pattern. The correct answer is: 
In the 1st string = 3 beads, In the 2nd string = 2 beads,
In the 3rd string = 1 bead, In the 4th string = 3 beads.
Follow the same pattern. The correct answer is: 
In the 1st string = 9 beads, In the 2nd string = 8 beads,
In the 3rd string = 7 beads, In the 4th string = 6 beads.
Follow the same pattern. The correct answer is:
Place Value
Question 4:
Represent the Given Numbers by Drawing the Correct Number of Beads on the Abacus.
Draw the correct number of beads. The correct answer is:
Question 5:
Do the Addition by Using an Abacus.
 22 + 36 = ?
 54 + 11 = ?
 87 – 36 =?
The correct answer is:
 First, represent the number 22 on an abacus. Then add the number 36. Count the total number of beads. So we get,
 First, represent the number 54 on an abacus. Then add the number 11. Count the total number of beads. So we get,
 We have to subtract 36 from 87. Remove 3 beads from 8 and 6 beads from 7 beads. Then count the remaining beads. So we get,
22 + 36 = 58
54 + 11 = 65
87 – 36 = 51