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Subtraction with Regrouping - Presentation
2 3 Primary + Unit Plans Presentations Mathematics Number & Place Value Patterns & Algebras 64 Pages

Subtraction with Regrouping - Presentation

This step-by-step presentation guides students through completing subtraction problems involving regrouping. First, the presentation revises basic subtraction concepts, moves on to subtractions with regrouping and then looks at those trickier subtraction problems involving multiple regrouping and zeros. The presentation is part of a larger unit of work on Subtraction with Regrouping- Year 3.
 

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Learning goals

  • We are learning to use a range of mental and written strategies to solve simple addition and subtraction problems.
  • We are learning to use number sentences and partitioning to demonstrate the connection between addition and subtraction.
  • We are learning to add and subtract two-and three-digit numbers using place value groupings.
  • We are learning to add and subtract one- and two-digit numbers, using a variety of strategies, e.g. partitioning, doubles, near doubles, bridging to 10 and rearranging and regrouping of numbers.
  • We are learning to solve problems by using number sentences for addition or subtraction.
  • We are learning to partition, rearrange and regroup numbers to 10 000 using place value groupings.

Curriculum alignment

MA1-5NA old Uses a range of strategies and informal recording methods for addition and subtraction involving one- and two-digit numbers MA2-4NA old Applies place value to order, read and represent numbers of up to five digits 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 MA1-8NA old Creates, represents and continues a variety of patterns with numbers and objects MA2-3WM old Checks the accuracy of a statement and explains the reasoning used MA2-2WM old Selects and uses appropriate mental or written strategies, or technology, to solve problems MA2-1WM old Uses appropriate terminology to describe, and symbols to represent, mathematical ideas MA2-AR-02 new Completes number sentences involving addition and subtraction by finding missing values MA2-AR-01 new Selects and uses mental and written strategies for addition and subtraction involving 2- and 3-digit numbers MA2-RN-02 new Represents and compares decimals up to 2 decimal places using place value MA2-RN-01 new Applies an understanding of place value and the role of zero to represent numbers to at least tens of thousands MA1-CSQ-01 new Uses number bonds and the relationship between addition and subtraction to solve problems involving partitioning
VCMNA131 Apply place value to partition, rearrange and regroup numbers to at least 10 000 to assist calculations and solve problems VCMNA113 Solve problems by using number sentences for addition or subtraction

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

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