Yuvraj was asked to estimate the sum of 4689 + 19316 and 108 + 2499. Explain with proper steps. [4 MARKS]

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Solution

Concept: 1 Mark
Steps: 2 Marks
Answer: 1 Mark

Given that
We have to estimate 4689 + 19316
Clearly, 19316 > 4689
we shall round off the numbers to the nearest thousands.
19316 is rounded off to 19000
4689 is rounded off to 5000

Estimated sum is:
19000 + 5000 = 24000
We also have to estimate:
108 + 24999
Now, 24999 > 108
We shall round off the number to nearest hundred.
108 can be rounded off to 100.
24999 can be rounded off to 25000.
The estimated sum of the numbers = 100 + 25000 = 25100.

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