Question

Estimate the following by rounding off to nearest hundred
(a) 7682 + 648
(b) 8516 - 778​

Answer 1

ANSWER

In 475 the last two digits i.e., 75 is greater than 50.

Therefore, 1 will be added to the 3rd last digit and the last two digits will become zero.

After rounding to nearest hundred we will get 500.

In 225 the last two digit i.e., 25 is less than 50

Thus, the 3rd last will remain same and the last digit will become zero.

After rounding to nearest ten we will get 200.

Hence, the required product is 500×200=1,00,000

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Answer 2

1. 8330

the nearest hundred is 8300

2. 7738

the nearest hundred is 7800

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