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Question

Evaluate each of the following:

(i) 1113 − 893

(ii) 463+343

(iii) 1043 + 963

(iv) 933 − 1073

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Solution

In the given problem, we have to find the value of numbers

(i) Given

We can write as

We shall use the identity

Here

1113-893=100+113-100-113

Hence the value of is

(ii) Given

We can write as

We shall use the identity

Here

463+343=40+63+40-63

Hence the value of is

(iii) Given

We can write as

We shall use the identity

Here

1043+963=100+43+100-43

Hence the value of is

(iv) Given

We can write as

We shall use the identity

Here

Hence the value of is .


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