NCERT Class 8 Mathematics Solutions: Chapter 16 –Playing with Numbers Exercise 16.1 Part 1

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Example of playing with number

Example of Playing with Number

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1. Find the values of the letters in the following and give reasons for the steps involved.

Answer:

On putting and so on and we get,

in which ones place is .

And

Putting and carry over,

we get

So,

2. Find the values of the letters in the following and give reasons for the steps involved.

Answer:

On putting and so on and we get,

in which ones place is .

And

Putting and carry over ,

we get

So,

3. Find the values of the letters in the following and give reasons for the steps involved.

Answer:

On putting

And so on and we get,

in which ones place is 6.

So,

Understanding of Number system

Understanding of Number System

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1. Find the values of the letters in the following and give reasons for the steps involved.

Answer:

On putting ,

we get

Putting at ones place and carry over ,

we get For

So,

2. Find the values of the letters in the following and give reasons for the steps involved.

Answer:

On putting ,

Now ,

Then

Putting at tens place and carry over,

we get

So,

3. Find the values of the letters in the following and give reasons for the steps involved.

Answer:

Putting,

we get

Now again we add

Tens place digit is and carry over 1.

Now

So,