How many 8’s are in the answer and sum 5890/45? When we asked to do an estimate for this number what is the difference show your estim

Question

How many 8’s are in the answer and sum 5890/45?
When we asked to do an estimate for this number what is the difference show your estimate and write the difference to include the decimals 2dp.

in progress 0
Ariana 3 weeks 2021-09-08T10:37:21+00:00 1 Answer 0

Answers ( )

    0
    2021-09-08T10:38:46+00:00

    Answer:

    • 1. There are infinite 8’s
    • 2. The estimate is 130.89
    • 3. The difference is 0.01

    Explanation:

    There are countless, or infinite, 8’s in the answer because the result is a periodic decimal:

            \dfrac{5890}{45}=130.8888 . . .

    The notation used for the periodic decimal numbers is an arc over the number that is repeated. In this case, it would be an arc over the first 8.

    I will use a bar just to show how it is, but instead of a bar it should be an arc:

              \dfrac{5890}{45}=130.\overline 8

    The estimation or approximation to two decimal places requires to drop the 8’s since the third one and increase the second 8 to 9 (because the first decimal dropped is greater than or equal to 5).

    Thus the estimated value would be 13.89.

    The difference is:

    • 130.89 – 130.888. . . = 0.0111. . .
    • Rounded to 2 decimal places: 0.01

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )