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Teach students to explain the effect of multiplying and dividing decimals by 10, 100 and 1000 with this complete teaching bundle. Students write numbers in expanded form, multiply or divide the value of each digit, and describe how each digit changes position and value while the decimal point stays where it is.

Combining a lesson plan, a 46-slide editable teacher presentation, three differentiated student activities, an exit ticket with interpretation guide and a hands-on Power Exchange place value bank game, this curriculum-aligned bundle provides everything you need to teach the lesson from start to finish.

Built around the I Do, We Do, You Do model, students move from explicit teacher modelling to guided practice and independent application. They show digit moves on a place value chart, multiply and divide digit by digit, describe each digit's old and new value, discuss common reasoning errors and explain why we say the digits move, not the decimal point.

What's included in this teaching bundle?

Teacher Slides (PowerPoint)

• 46 editable, ready-to-teach slides following the I Do, We Do, You Do structure
• Clear learning intention and success criteria
• Review of moving digits on a place value chart
• Modelled examples multiplying and dividing the value of each digit in expanded form
• A changes-in-place-value summary table for × and ÷ 10, 100 and 1000
• Reasoning discussion and explain-the-value tasks
• Every question slide followed by an answer slide
• Mini whiteboard check-ins throughout

Lesson Plan and Exit Ticket (PDF)

• Complete I Do, We Do, You Do lesson plan for a 45 to 60 minute lesson
• Diagnostic, formative and summative assessment points
• Key vocabulary, teacher notes and common misconceptions
• Exit ticket (two per page) with an interpretation guide

Differentiated Student Activities (PDF)

• Activity overview to help you match each option to your students
• Three differentiated activities: Showing Digit Moves on a Place Value Chart, Multiplying and Dividing Digit by Digit and Explaining the Effect of Powers of 10
• Place value charts for showing digit moves on the supported activity
• Digit-by-digit working tables, written explanations and prediction questions
• Answer key and marking guide for every activity

Class Recording Sheet (Excel)

• Type T, A or B and the cell colours itself: Working towards, Achieving, Working beyond
• Exit ticket results and activity evidence tabs, with numbered next teaching steps

Hands-On Activity: Power Exchange (PDF)

• An exchange mat with a fixed decimal point, 63 place value tokens from 1000 to 0.001 and a fold-up power die
• Students build a decimal with tokens, roll, and exchange every token for one worth 10, 100 or 1000 times as much or as little, then say how each digit's value changed
• 12 customer cards, 6 target cards and 4 bank error cards, with a points record and a reflection
• Teacher page with set-up, a model round, differentiation and misconceptions
• Answer page with every exchange, bust, target and bank error correction
• What you need: printed mats, tokens and cards, scissors, pencils and a glue stick

Ideal for upper primary classrooms, this bundle provides a structured approach to explaining the effect of multiplying and dividing decimals by 10, 100 and 1000, combining explicit instruction, visual place value charts, differentiated independent practice and an engaging hands-on place value token game.

Formats: PowerPoint, PDF and Excel

Aligned to Australian Curriculum: Multiply and divide decimals by multiples of powers of 10 without a calculator, applying knowledge of place value and proficiency with multiplication facts; using estimation and rounding to check the reasonableness of answers (AC9M6N06)

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