Addition+and+Subtraction

Home > Maths > Number > Addition and Subtraction media type="custom" key="10768782" width="70" height="70" = = Students develop facility with number facts and computation with progressively larger numbers in addition and subtraction and an appreciation of the relationship between those facts.



=Early Stage One = ||
 * **//NES1.2: Combines, separates and compares collections of objects, describes using everyday language and records using informal methods.//**

**Key ideas:**
 * Combine groups to model addition
 *  T ake part of a group away to model subtraction
 * Compare groups to determine ‘how many more’
 * Record addition and subtraction informally ||

Stage One
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 * **//NS1.2: Uses a range of mental strategies and informal recording methods for addition and subtraction involving one and two digit numbers.//**

**Key ideas:**
 * Model addition and subtraction using concrete materials
 * Develop a range of mental strategies and informal recording methods for addition and subtraction
 * Record number sentences using drawings, numerals, symbols and words ||

=Stage Two = ||
 * **//NS2.2: Uses mental and written strategies for addition and subtraction involving two, three and four digit numbers.//**

**Key ideas:**
 * <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">Use a range of mental strategies for addition and subtraction involving two-, three- and four-digit numbers
 * <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">Explain and record methods for adding and subtracting
 * <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">Use a formal written algorithm for addition and subtraction ||

=<span style="color: #589ee9; font-family: 'Trebuchet MS',Helvetica,sans-serif;">Stage Three = ||
 * <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">**//NS3.2: Selects and applies appropriate strategies for addition and subtraction with counting numbers of any size.//**

<span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">**Key ideas:**
 * <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;"> Select and apply appropriate mental, written or calculator strategies for addition and subtraction with counting numbers of any size ||