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Mental Subtraction Strategies Posters
1 2 Pre & Primary Essentials Resources Mathematics Number & Place Value Money Patterns & Algebras 6 Pages

Mental Subtraction Strategies Posters

This colourful and detailed set of posters outlines six common strategies used to solve mental subtraction problems. 

- Make Ten
- Use Ten
- Take Ten
- Jump Strategy 
- Inverse Strategy

They are designed to be used as a point of reference to assist students when tackling subtraction problems. The posters have been created to complement the Mental Subtraction Strategies Unit of Work for Year 2. 
 

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Learning goals

  • We are learning to use a range of strategies, to solve simple addition and subtraction problems.
  • We are learning to add and subtract numbers within 20, using a variety of strategies, e.g. counting on, counting back, partitioning, subitising and part-part whole knowledge of numbers to 10 and to use the language of 'plus' and 'minus' in story problems.
  • We are learning to read, write, model and represent numbers to 100 in different ways and on number lines.
  • We are learning to recognise Australian coins according to their value.
  • We are learning to model problems involving addition and subtraction, including simple whole-dollar money problems, in practical role-play situations.
  • We are learning to solve problems involving modelling addition, subtraction, equal sharing and grouping, using different strategies.
  • We are learning to recall addition facts to 20 and apply to related subtraction facts using a range of strategies.
  • We are learning to use a range of mental and written strategies to solve simple addition and subtraction problems.

Curriculum alignment

MA1-1WM old Describes mathematical situations and methods using everyday and some mathematical language, actions, materials, diagrams and symbols MA1-2WM old Uses objects, diagrams and technology to explore mathematical problems MA1-3WM old Supports conclusions by explaining or demonstrating how answers were obtained MA1-5NA old Uses a range of strategies and informal recording methods for addition and subtraction involving one- and two-digit numbers MA1-6NA old Uses a range of mental strategies and concrete materials for multiplication and division MA1-4NA old Applies place value, informally, to count, order, read and represent two- and three-digit numbers MA1-CSQ-01 new Uses number bonds and the relationship between addition and subtraction to solve problems involving partitioning MA1-FG-01 new Uses the structure of equal groups to solve multiplication problems, and shares or groups to solve division problems
VCMNA092 Recognise, describe and order Australian coins according to their value VCMNA090 Represent practical situations that model sharing VCMNA087 Recognise, model, read, write and order numbers to at least 100. Locate these numbers on a number line VCMNA094 Recognise the importance of repetition of a process in solving problems VCMNA107 Solve simple addition and subtraction problems using a range of efficient mental and written strategies VCMNA108 Recognise and represent multiplication as repeated addition, groups and arrays VCMNA114 Apply repetition in arithmetic operations, including multiplication as repeated addition and division as repeated subtraction VCMNA111 Count and order small collections of Australian coins and notes according to their value VCMNA089 Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts VCMNA103 Investigate number sequences, initially those increasing and decreasing by twos, threes, fives and ten from any starting point, then moving to other sequences

Australian Curriculum covers QLD / SA / WA / NT / TAS / ACT.

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