# Scale matters: decimal numbers: assessment

TLF ID L8630

Test what you know about using scales ranging from hundreds and tens down to tenths and hundredths. Look at two numbers and place a third number on a number line. Rename the third number by assigning place values for each digit or group of digits. For example, look at the numbers 74.6 and 76 on a number line and select 'Tenths' as the most useful scale to locate the given number 75.1. Rename 75.1 as 75 ones and 10 hundredths. See a report of your results. This assessment object is one in a series of three objects.

#### Educational details

Key learning objectives
• Students select appropriate scale for placing a decimal number on a number line.
• Students place a decimal number on a number line using an appropriate scale.
• Students rename decimal numbers by assigning place values for single digits or groups of digits.
Educational value
• Assesses student understanding of scales as diagrammatic representations reflecting the placement of unit lengths along a line.
• Includes three sets of three problems.
• Assesses the student's skill level after each set and adjusts the level of difficulty.
• Supports repeated use through multiple problem sets.
• Includes a printable report with the student's corrected answers and a summary of achievement for each set attempted.
Year level

5

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
Student activity
• Interactives;
• Analysis;
• Modelling

#### Other details

Contributors
• Script writer
• Name: Michael Wagner
• Organisation: Godwin + Wagner
• Address: Box Hill South VIC 3128 Australia
• Script writer
• Name: Rebecca Cox
• Organisation: CWA New Media
• URL: http://www.cwa.co.nz/
• Subject matter expert
• Educational validator
• Educational validator
• Name: Gayl O'Connor
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au
• Technical implementer
• Publisher
• Date of contribution: 20 Sep 2013
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au/
Access profile
• Colour independence
• Hearing independence
Learning resource type
• Assessment resource
Browsers
• Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
• Firefox - minimum version: (MS-Windows)
• Safari - minimum version: 5.1 (MacOS)
Operating systems
• MacOS - minimum version: 10.6
• MS-Windows - minimum version: XP - maximum version: 7
Rights
• © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.