Converting from standard index form to decimal.

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From users who are members of Transition to university :

Stanislav Duris

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Ready to use

7 years, 9 months ago

From users who are not members of Transition to university :

Helen Dey

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4 years, 10 months ago

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Helen Dey 4 years, 10 months ago

Gave some feedback: Ready to use

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Christian Lawson-Perfect 5 years, 11 months ago

Saved a checkpoint:

Replaced string restriction with a pattern restriction

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Stanislav Duris 7 years, 9 months ago

Published this.

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Stanislav Duris 7 years, 9 months ago

Gave some feedback: Ready to use

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Stanislav Duris 7 years, 9 months ago

Created this as a copy of Working with standard index form .

Name	Status	Author	Last Modified
Working with standard index form	Ready to use	Stanislav Duris	20/11/2019 14:46
Converting from standard index form to decimal.	Ready to use	Stanislav Duris	08/06/2020 16:54
Addition and subtraction of numbers in standard form	Ready to use	Stanislav Duris	20/11/2019 14:47
Multiplication and division of numbers in standard index form	Ready to use	Stanislav Duris	01/04/2020 09:10
Multiplication and division of numbers in standard index form [L0 Randomised]	Needs to be tested	Matthew James Sykes	25/07/2018 10:21
Katy's copy of Working with standard index form	draft	Katy Dobson	03/09/2019 08:29
Ugur's copy of Working with standard index form	Ready to use	Ugur Efem	08/11/2021 16:45

There are 35 other versions that do you not have access to.

Question statement

Write the following in decimal form.

Give any introductory information the student needs.

			Name	Type	Generated Value

			A	list	[ 2.34, 6.12 ]
			ran	integer	8

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
repeat(random(1..10 #0.01 except 10), 2)

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: `list`

[ 2.34, 6.12 ]

This variable doesn't seem to be used anywhere.

Parts

Part a) Gap-fill
1. Gap Mathematical expression
  Add
Part b) Gap-fill
1. Gap Mathematical expression
  Add

Gap-fill

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

$\var{A[0]} \times 10^\var{ran} =$ Unnamed gap

Advice

When given a number in the form $A \times 10^n$ , we can think of $n$ as a number telling us how many places to move the decimal point.

When $n$ is positive, we move the decimal point to the right side, for example:

$1.5 \times 10^3 = 1500.0 \text{ .}$

When $n$ is negative, we move the decimal point to the left side, for example:

$1.5 \times 10^{-3} = 0.0015 \text{ .}$

When $n = 0$ , we do not move the decimal point:

$1.5 \times 10^0 = 1.5 \text{ .}$

a)

In $\var{A[0]} \times 10^\var{ran}$ , $n = \var{ran}$ and so we move the decimal point {ran} places to the right.

$\var{A[0]} ⇒ \var{precround((A[0] * 10^ran), 0)}$

b)

In $\var{A[1]} \times 10^\var{-ran + 4}$ , $n = \var{-ran +4}$ and so we move the decimal point {ran -4} places to the left.

$\var{A[1]} ⇒ \var{A[1]*10^(-ran+4)}$

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
Mathematical expression
Mathematical expression		Hasn't run yet
Gap-fill
Gap-fill		Hasn't run yet
Mathematical expression
Mathematical expression		Hasn't run yet

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Error

Converting from standard index form to decimal.

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Helen Dey 4 years, 10 months ago

Christian Lawson-Perfect 5 years, 11 months ago

Stanislav Duris 7 years, 9 months ago

Stanislav Duris 7 years, 9 months ago

Stanislav Duris 7 years, 9 months ago

Error in variable testing condition

Error

Warning

Generated value: `list`

Parts

Gap-fill

a)

b)

Loading...

Error

Converting from standard index form to decimal.

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Helen Dey 4 years, 10 months ago

Christian Lawson-Perfect 5 years, 11 months ago

Stanislav Duris 7 years, 9 months ago

Stanislav Duris 7 years, 9 months ago

Stanislav Duris 7 years, 9 months ago

Error in variable testing condition

Error

Warning

Generated value: list

Parts

Gap-fill

a)

b)

Generated value: `list`