# The multiplier: generate hard multiplications

TLF ID L84

Solve multiplications such as 67x88. Use a partitioning tool to help solve randomly generated multiplications. Learn strategies to do complex arithmetic in your head. Split a multiplication into parts that are easy to work with, use simple times tables, then solve the original calculation. This learning object is one in a series of five objects.

#### Educational details

Key learning objectives
• Students apply the distributive property to calculate products mentally involving two two-digit numbers.
• Students use known multiplication facts to calculate products in their head.
• Students partition numbers to find products that are easy to calculate mentally.
• Students investigate and apply strategies that make calculating products easier.
Educational value
• Helps students develop mental strategies to simplify and solve multiplication problems.
• Includes a partitioning tool for student use when solving multiplication problems involving two, two-digit numbers.
• Encourages students to apply times tables to find products mentally.
• Encourages repeated use by incorporating randomly-generated problems.
• Includes an option to print a diagram showing how the student split a multiplication problem into parts that are easy to work with.
Year level

5

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
Concept
• Mathematics/Multiplication
• Mathematics/Counting strategies
• Mathematics/Whole numbers
• Mathematics/Number patterns
• Mathematics/Number relationships
• Mathematics/Factors
• Mathematics/Algorithms
• Mathematics/Distributive property
• Mathematics/Mental arithmetic
Skill
• Analysis;
• Application;
• Comprehension;
• Knowledge
Student activity
• Interactives;
• Analysis;
• Experiment;
• Modelling
Learning design
• Independent learning;
• Experiential learning;
• Problem solving;
• Visual learning

#### Other details

Contributors
• Technical implementer
• Subject matter expert
• 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
• Interactive 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.

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