Teach rounding integers to significant figures with this editable, 65-slide Year 8 maths PowerPoint. The lesson builds understanding through worked examples, clearly labelled diagrams where needed, independent practice and complete answers.
WHAT PUPILS LEARN
Pupils round whole-number values to one, two and three significant figures. Examples address which zeros are significant, how carrying affects the leading digits and why an answer must be expressed at the requested place value. A money amount and a stadium capacity put the notation into familiar contexts without changing the mathematical objective.
THE PRACTICE
The 24-question practice page includes controlled changes in accuracy, the deciding digit, carrying and inverse questions about the original integers that could round to a target. The whole-class task has eight Developing, eight Secure and five Greater Depth questions with answers and a separate Super Challenge. Pupils reason about least and greatest possible integers, ranges and simultaneous rounding conditions rather than merely rounding bigger numbers.
SUPER CHALLENGE
In the Super Challenge, an unknown integer is a multiple of 25. It rounds to 63 000 at two significant figures and to 62 500 at three significant figures. Pupils find every possible integer and justify why the list is complete. The answer uses the intersection of rounding intervals and the multiple-of-25 condition.
PRINT-FREE CLASSROOM USE
Project the PowerPoint while pupils respond in exercise books or on mini-whiteboards. The questions are intended for a teacher-led lesson, with time to model an example, check responses and discuss a method before moving on. Pupils can record calculations and explanations without a printed worksheet. When a particular activity calls for drawing, they may still need their usual mathematical equipment.
LESSON STRUCTURE
The presentation includes a starter and the mathematical language needed for the lesson. I Do and We Do examples model the key relationships before pupils work independently. Assessment-for-learning questions and their following answers allow frequent checks. The practice and differentiated tasks support a shared whole-class display, while the answer slides give the teacher a clear point to pause for discussion.
PRACTICE AND FEEDBACK
The 24-question practice task is presented together on one slide, giving the teacher room to keep the class working while selecting a pace. The differentiated activity has eight Developing, eight Secure and five Greater Depth questions as well as a Super Challenge. Complete answers follow the tasks. The challenge solution makes the reasoning visible, so pupils can compare an argument with their own method.
Pupils can explain what a labelled number or line represents before calculating. This helps distinguish a correct method from an answer reached by guessing from the diagram.
The PPT is fully editable.
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Fractions, Decimals and Accuracy Bundle | I Do, We Do, You Do | Year 8 Maths | Print Free
Editable Beyond Printables Year 8 maths PowerPoints. Project modelling, practice and answers; pupils can work in exercise books. The exact TES titles and resource numbers identify every included lesson. EXACT LESSONS INCLUDED (1) M835 — Adding and Subtracting Fractions | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587352] (2) M157 — Multiplying Fractions | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587355] (3) M110 — Dividing Fractions | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587383] (4) M645 — Calculating with Fractions | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587384] (5) M619 — Calculating with Mixed Numbers | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587403] (6) M701 — Recurring Decimal Notation | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587487] (7) M922 — Fractions to Recurring Decimals | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587498] (8) M994 — Rounding Integers Using Significant Figures | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587536] (9) M131 — Rounding Decimals to Significant Figures | I Do, We Do, You Do | Year 8 Maths print-free LESSON [TES 13583246] (10) M878 — Estimating Calculations | I Do, We Do, You Do | Year 8 Maths print-free LESSON [TES 13583250] Each lesson includes retrieval or prerequisite work, modelling, assessment checks, practice and differentiated questions with answers. Choose Developing, Secure or Greater Depth tasks for the class. Super Challenge questions extend reasoning within the topic. The presentations are editable. Keep questions with their matching answers when adapting the lesson for a particular class. The bundles overlap: lessons also occur in the relevant subject collection and complete Year 8 collection. Check the list before buying twice. Use the presentations in sequence or select a lesson for targeted KS3 revision. Allow pupils time to explain their methods and check their answers. Print free means worksheets are not required; pupils may need exercise books, squared paper or geometry equipment for particular tasks. These are original Beyond Printables teaching resources; they are not official Sparx products or access to the Sparx platform. The lesson files are separate PowerPoints, so a teacher can locate and reopen a single topic without working through the whole bundle. Teachers can pause on a modelled example, invite a pupil explanation, then reveal and discuss the worked answer before continuing. The guided examples support this classroom routine. The independent questions are intended for written working, not just a final answer. Pupils can compare a calculation, diagram or explanation with the displayed answer and correct it. A teacher can start a lesson with retrieval, use the checks on mini-whiteboards and direct pupils to practice suited to their current understanding. The presentation can be revisited later.
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Bundle
Rounding, Estimation and Standard Form Bundle | I Do, We Do, You Do | Year 8 Maths | Print Free
Editable Beyond Printables Year 8 maths PowerPoints. Project modelling, practice and answers; pupils can work in exercise books. The exact TES titles and resource numbers identify every included lesson. EXACT LESSONS INCLUDED (1) M994 — Rounding Integers Using Significant Figures | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13587536] (2) M131 — Rounding Decimals to Significant Figures | I Do, We Do, You Do | Year 8 Maths print-free LESSON [TES 13583246] (3) M878 — Estimating Calculations | I Do, We Do, You Do | Year 8 Maths print-free LESSON [TES 13583250] (4) M719 — Standard Form with Positive Indices | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13585603] (5) M678 — Standard Form with Negative Indices | I Do, We Do, You Do | Year 8 Maths | Print Free [TES 13585541] Each lesson includes retrieval or prerequisite work, modelling, assessment checks, practice and differentiated questions with answers. Choose Developing, Secure or Greater Depth tasks for the class. Super Challenge questions extend reasoning within the topic. The presentations are editable. Keep questions with their matching answers when adapting the lesson for a particular class. The bundles overlap: lessons also occur in the relevant subject collection and complete Year 8 collection. Check the list before buying twice. Use the presentations in sequence or select a lesson for targeted KS3 revision. Allow pupils time to explain their methods and check their answers. Print free means worksheets are not required; pupils may need exercise books, squared paper or geometry equipment for particular tasks. These are original Beyond Printables teaching resources; they are not official Sparx products or access to the Sparx platform. The lesson files are separate PowerPoints, so a teacher can locate and reopen a single topic without working through the whole bundle. Teachers can pause on a modelled example, invite a pupil explanation, then reveal and discuss the worked answer before continuing. The guided examples support this classroom routine. The independent questions are intended for written working, not just a final answer. Pupils can compare a calculation, diagram or explanation with the displayed answer and correct it. A teacher can start a lesson with retrieval, use the checks on mini-whiteboards and direct pupils to practice suited to their current understanding. The presentation can be revisited later. For a revision lesson, select a short run of examples and practice rather than presenting every slide. For first teaching, allow more time for discussion and checking misconceptions. Where a question asks for reasoning, encourage pupils to state why the method applies. Comparing two plausible approaches can expose an error before pupils move to a new example. Editable slides make it possible to adapt a number or context for a class. Recheck the corresponding worked answer whenever a question is changed.
£12.99
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