What is $7 9/10$ as an improper fraction?

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Answer 1 · 2016-11-06T13:35:14

$7 9/10 = (10xx7+9)/10 = 79/10$

Remember that a whole number is:

$8/8, 3/3, 11/11, 40/40, etc$

In this case we are working with the fraction 'tenths'.
Each whole number is $10/10$

In 7 whole numbers there will be $7 xx10 = 70$ tenths

$70/10 = 7$

There are also 9 extra 'tenths'.

In total there are $10xx7 +9 = 79$ tenths.

$7 9/10 = (10xx7+9)/10 = 79/10$

Answer 2 · 2016-11-10T12:29:34

With practice you would start to use shortcuts and speed up solving this type of question.

$79/10$

Write as $7+9/10$

Multiply by 1 and you do not change the value. But 1 comes in many forms so you can change the way a number looks without changing its value.

$" "color(green)([7color(magenta)(xx1)]+9/10" "->" "[7color(magenta)(xx10/10)]+9/10$

$" "70/10+9/10" "=" "(70+9)/10" " =" " 79/10$

What is 7 9/107 9/10 as an improper fraction?