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# Wishball challenge: whole numbers

TLF ID L871

Test your understanding of decimal place value with whole numbers. Receive a starting number, such as 3786, and work towards turning it into a target number, 7664. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. Be careful not to overshoot the target! You can use a 'Wishball' to help you reach the target number. Try to achieve the target with as few additions or subtractions as possible. This learning object is one in a series of ten objects.

#### Educational details

Key learning objectives
• Students identify the place value of each digit in a four-digit whole number and the relative value of a given digit in different places within a four-digit whole number.
• Students add and subtract ones, tens, hundreds and thousands.
• Students read and interpret various representational forms.
Year level

4

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
Strand
• Mathematics/Number and algebra
Concept
• Mathematics/Number lines
• Mathematics/Place value
• Mathematics/Whole numbers
• Mathematics/Subtraction
• Mathematics/Counting
Skill
• Knowledge;
• Comprehension;
• Application
Student activity
• Interactives;
• Experiment;
• Analysis
Learning design
• Experiential learning;
• Independent learning;
• Problem solving;
• Visual learning

#### Other details

Contributors
• Technical implementer
• Script writer
• Name: Michael Wagner
• Organisation: Godwin + Wagner
• Address: Box Hill South VIC Australia
• Subject matter expert
• Name: John Flatt
• 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
• Device independence
• Hearing independence
Learning resource type
• Tablet friendly (Interactive resource)
Browsers
• any - minimum version: Microsoft Edge (Windows); Default Android Browser
• Google Chrome - minimum version: 35+ (Windows, macOS, Android)
• Firefox - minimum version: 45+ (Windows & Mac)
• ms-internet explorer - minimum version: 10+ (Windows)
• Safari - minimum version: 7+ (Mac); Safari for iOS 9+ (iOS)
Operating systems
• ms-windows - minimum version: Vista+
• macos - minimum version: 10.9+
• ios - minimum version: 9+
• android - minimum version: 5+
Rights
• © Education Services Australia Ltd, 2016, except where indicated under Acknowledgements. Unless otherwise indicated, this material may be used in accordance with the Creative Commons Attribution 4.0 International (CC BY 4.0) licence creativecommons.org/licenses/by/4.0/.