Lois's copy of Combining fractions

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Lois Rollings

History

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Lois Rollings 8 years, 6 months ago

Published this.

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Lois Rollings 10 years, 9 months ago

Created this as a copy of Combining fractions.

Name	Status	Author	Last Modified
Combining fractions	draft	Bill Foster	06/08/2020 08:42
Lois's copy of Combining fractions	draft	Lois Rollings	02/09/2016 12:47

There are 20 other versions that do you not have access to.

Question statement

Do the following {dosomething} and give your answer as a fraction in its lowest form.

Give any introductory information the student needs.

			Name	Type	Generated Value

a	integer	1
b	integer	8
g	integer	2
dosomething	string	addition
f	integer	9
s1	integer	1
action1	string	adding
action	string	Adding

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Value

xxxxxxxxxx
 
random(1..11)

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Description

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Generated value: `integer`

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Parts

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1. Gap Mathematical expression
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Gap-fill

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$\simplify[std]{{a} / {g} + ({s1*b} / {f})}$
Input your answer here: Unnamed gap

You should not give your answer as a decimal or use any brackets.

Advice

Recall that to add or subtract fractions you need first to find a common denominator.

Algebraically the rule for {action1} fractions is

$\simplify{a/b+ {s1}*(c/d)=(a*d+{s1}*b*c)/(b*d)}.$
In this case we have:

$\simplify[std,!unitFactor]{{a} / {g} + ({s1*b} / {f}) = ({a} * {f} + {g} * {s1*b}) / ({g} * {f}) ={a*f+s1*g*b}/{g*f}}.$
Note that this fraction is in its lowest form as there are no common factors in the denominator and the numerator.

For further help with the arithmetic of fractions see: http://www.mathcentre.ac.uk/resources/uploaded/mc-bus-fractions-2009-1.pdf

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

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Checkpoint description

Lois Rollings 8 years, 6 months ago

Lois Rollings 10 years, 9 months ago

Error in variable testing condition

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Warning

Generated value: `integer`

Parts

Gap-fill

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Lois's copy of Combining fractions

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Lois Rollings 8 years, 6 months ago

Lois Rollings 10 years, 9 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`