Finding an amount if you know what some percentage of it is.

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Rob Cade

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Rob Cade

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8 years, 10 months ago

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Rob Cade 8 years, 10 months ago

Gave some feedback: Ready to use

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Rob Cade 8 years, 10 months ago

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Rob Cade 11 years, 10 months ago

Created this.

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Question statement

What's A, if B% of A is C?

For example, what's A, if 30% of A is 21? Answer: A = 70.

Try the first question without using a calculator.

Give any introductory information the student needs.

			Name	Type	Generated Value

onepercentofa1	rational	2
a1	integer	200
a2	integer	5210
b1	rational	16
b2	rational	29697/5
perc1	integer	8
perc2	integer	114

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
B1/perc1

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `rational`

← Depends on:

b1
perc1

→ Used by:

"Part a)" → "Unnamed step" - prompt

Parts

Part a) Gap-fill
1. Gap Number entry
  Add
1. Step Information only
Part b) Gap-fill
1. Gap Number entry
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

What's A, if $\var{perc1}$ % of A = $\var{B1}$ . Answer: A = Unnamed gap

Advice

To find A, if B% of A is C

Find 1% of A, by dividing C by B
Multiply 1% of A by 100

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Information only
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet

This question is used in the following exams:

Practice with percentages by Rob Cade in Headstart.
Decimals & Percentages Practice by Rob Cade in Headstart.
Practice 1 by Chris Knox in Chris's workspace.

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Finding an amount if you know what some percentage of it is.

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

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Checkpoint description

Rob Cade 8 years, 10 months ago

Rob Cade 8 years, 10 months ago

Rob Cade 11 years, 10 months ago

Error in variable testing condition

Error

Warning

Generated value: `rational`

Parts

Gap-fill

Loading...

Error

Finding an amount if you know what some percentage of it is.

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Rob Cade 8 years, 10 months ago

Rob Cade 8 years, 10 months ago

Rob Cade 11 years, 10 months ago

Error in variable testing condition

Error

Warning

Generated value: rational

Parts

Gap-fill

Generated value: `rational`