estimate the sum or difference by rounding off each number to its greatest place value: 12370 + 11110​

Question

estimate the sum or difference by rounding off each number to its greatest place value: 12370 + 11110​

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Adalyn 3 months 2021-07-25T18:59:55+00:00 1 Answers 0 views 0

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    2021-07-25T19:01:02+00:00

    Answer:

    ⇒ The given two numbers are 5679 and 422.

    ⇒ In number 5679, its tens digit is 7, which is greater than 5.

    ⇒ So, we increase the digits at hundreds place by 1 and replace each one of the digits at tens and ones place by 0 to round off the given number to its greatest place.

    ∴ Round off 5679 to its greatest place is 5700

    ⇒ In number 422, its Itens digit is 2, which is less than 5.

    ⇒ So, we replace each of the tens and ones digits by 0 and keep the other digits as they are to round off the given number to its greatest.

    ∴ Round off 422 to its greatest place is 400

    ∴ Required number = 5700−400=5300

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