Question

Maria, Mike, and Patti are writing a report together.
Maria has written
1
10
of the report, Mike has written
1
4
, and Patti has written
1
8
.
Use number lines or benchmark fractions to estimate if they have more or less than
1
2
of their report left to write.
Use the drop-down box to show your answer.

They have...
more or less
than
1
2
of their report left to write

Answer 1

The amount of the report written is an illustration of proportions

They have more than 1/2 of their report to write

How to estimate the proportion of the report

From the question, we have the following parameters:

Maria = 1/10

Mike = 1/4

Patti = 1/8

Add the fractions to get the total

$Total = \frac {1}{10} + \frac 14 + \frac 18$

Take the LCM

$Total = \frac {4 + 10 + 5}{40}$

Add the expressions on the numerator

$Total = \frac {19}{40}$

19/40 is less than half

Hence, they have more than 1/2 of their report to write

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