Addition Using Abacus

We will learn addition using Abacus.

We know how to do addition.

For example;

I. Add 11 and 21

Here, we will add the numbers together 11 + 21 = 32


II. Add 17 and 22

Here, we will subtract 17 + 22 = 39


We generally add both the numbers together but, know we will learn how to add the numbers using abacus.

1. Add 12 and 24 using Abacus.

This abacus is showing the number 12.

Number 12 on Abacus

This abacus is showing the number 24.

Number 24 on Abacus

For adding, we count together.

For adding 12 and 24, count ones together and get 6 ones.

Adding tens together, we get 3 tens.

Thus, sum of 12 and 24 becomes 36.

Addition Using Abacus, Addition on Abacus

Therefore, 12 + 24 = 36

2. Find the sum of 14 and 15 using Abacus.

This abacus is showing the number 14.

Number 14 on Abacus

This abacus is showing the number 15.

Number 15 on Abacus

For adding, we count together.

For adding 14 and 15, count ones together and get 9 ones.

Adding tens together, we get 2 tens.

Thus, sum of 14 and 15 becomes 29.

Addition on Abacus

Therefore, 14 + 15 = 29


3. Add 46 and 31 Using Abacus.

This abacus is showing the number 46.

Number 46 on Abacus

This abacus is showing the number 31.

Number 31 on Abacus

For adding, we count together.

For adding 46 and 31, count ones together and get 7 ones.

Adding tens together, we get 7 tens.

Thus, sum of 46 and 31 becomes 77.

Addition of 2-Digit Numbers on Abacus

Therefore, 46 + 31 = 77


Worksheet on Addition Using Abacus:

1. Add the following using Spike Abacus:

(i) 14 + 13 = _____

(ii) 15 + 23 = _____

(iii) 28 + 31 = _____ 

(iv) 41 + 35 = _____

(v) 81 + 7 = _____

(vi) 66 + 33 = _____

(vii) 75 + 21 = _____

(viii) 50 + 20 = _____

(ix) 33 + 55 = _____

(x) 24 + 63 = _____


Answer:

1. (i) 27

(ii) 38

(iii) 59

(iv) 76

(v) 88

(vi) 99

(vii) 96

(viii) 70

(ix) 88

(x) 87

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