Maths
convert 3/40 into decimal form and write their periods and their length​

Maths
convert 3/40 into decimal form and write their periods and their length​

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1 thought on “Maths<br />convert 3/40 into decimal form and write their periods and their length​”

  1. Answer:

    Explanation:

    To convert a fraction into a decimal there are two methods:

    convert it to a fraction with a power of 10 as the denominator.

    divide the numerator by the denominator.

    The first method is the method of choice for denominators of

    2

    ,

    4

    ,

    5

    ,

    8

    ,

    10

    ,

    20

    ,

    25

    ,

    40

    ,

    50

    ,

    80

    The second method is easier for denominators of:

    3

    ,

    6

    ,

    7

    ,

    9

    ,

    11

    ,

    12

    etc because they have factors of

    3

    ,

    6

    ,

    7

    ,

    9

    ,

    11

    3

    40

    ×

    25

    25

    =

    75

    1000

    =

    0.075

    As soon as a number is in decimal form, the percent can be read off immediately.

    A percent is an amount which is given out of 100. decimal places represents hundredths.

    0

    .

    07

    5

    =

    75

    1000

    =

    7.5

    100

    =

    7

    .5

    %

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