Rounding, Estimating and Use of a Calculator: New Maths Curriculum Collection 4

Each fortnight, I will put together a selection of resources designed to help cover the objectives of the new maths curriculum for secondary schools (Key Stage 3). These are all freely available from the TES website.

You can find the full collection here

I hope you find them useful


Pupils should be taught to:

round numbers and measures to an appropriate degree of accuracy [for example, to a number of decimal places or significant figures] 

Rounding and estimating task

A way to get pupils using rounding and estimating skills.
Grand designs: Rounding and estimating

An activity that gets learners using their rounding and estimation skills.
Twitter significant figures

A different approach to looking at significant figures.
Rounding to significant figures

A lesson that looks at decimals, as well as whole numbers.


use approximation through rounding to estimate answers and calculate possible resulting errors expressed using inequality notation a<x

Upper and lower bounds bingo

A bingo activity that gets pupils looking at the upper and lower bounds of different measurements.
Estimation worksheet

A worksheet with worded questions looking at estimating to check answers.
Bingo game

This resource has loads of different activities across a number of different topics in maths.
Estimation calculations: Spot the errors

A chance for you to gauge how well your learners have done on this topic; the activity gets them using their estimation skills throughout.


use a calculator and other technologies to calculate results accurately and then interpret them appropriately 

Using a calculator worksheet

A worksheet on using a calculator for various topics
Getting to know your calculator

A getting to know your calculator PowerPoint presentation – great for students to see the potential of the
Calculator problems

KS3 students can practice key calculator skills with this activity.
Interpreting pie charts
Students learn how to find frequencies from pie charts using a calculator.


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