Initiatives Ltd
Business, Economics & Maths Resources
Minimising Workloads, Maximising Performance
Est 1999

apt4Maths: Set of 13 PowerPoint Presentations (Relating to Number) on Calculations for GCSE (and Key Stage 3) Mathematics

From £24.00 ex VAT

If you are a school/college and would like to place an order and be INVOICED later, please email sales@apt-initiatives.com.

This set of 13 PowerPoint Presentations, written by a highly experienced teacher (of 25+ years), senior examiner and reviser for Maths and Stats examinations, are designed for use by:

  • any teacher – not necessarily a maths specialist – as part of their own delivery of lessons.
  • students working independently.

They can be used by:

  • cover teachers.
  • students who are unable to attend their lesson in person.

Each PowerPoint Presentation includes:

  • Lesson objectives
  • Step-by-step explanations of the subject matter
  • Examples to aid understanding
  • Questions to check understanding
  • Answers to questions, with explanations
  • Suggestions regarding which topic(s) should be moved on to next.

These PowerPoint Presentations are one of several sets of PowerPoint Presentations, which essentially relate to the ‘Number’ section of the Maths specifications.  These other sets concern:

  • Place Value and Approximations
  • Fractions
  • Percentages


Product Information

This set of 13 PowerPoint Presentations (205 slides, excluding Title Pages) covers the following calculation-based topics: 

  • 01 Addition (15 slides): Reviews terminology linked with addition and teaches pencil and paper methods for adding integers and decimals. Also looks at techniques for checking answers.
  • 02 Subtraction (17 slides): Reviews terminology linked with subtraction and teaches pencil and paper methods for subtracting integers and decimals. Also looks at techniques for checking answers.
  • 03 Multiply and Divide by Powers of Ten (16 slides): Explains how to multiply or divide whole numbers and decimals by 10, 100, 1000, etc.
  • 04 Standard (Index) Form (17 slides): Explains why standard (index) form is used, how to read and write values in standard form, and how calculators are used with this format.
  • 05 Multiplication (Integers) (29 slides): Reviews terminology linked with multiplication and teaches the different pencil and paper methods available to multiply whole numbers together. Also looks at techniques for checking answers.
  • 06 Multiplying Decimals (7 slides): Explains how to multiply decimals together (by applying place value skills and multiplication skills previously learnt).
  • 07 Short and Long Division (Integers) (16 slides): Reviews terminology linked with division and teaches pencil and paper methods for dividing whole numbers. Also looks at techniques for checking answers.
  • 08 Dividing Decimals (8 slides): Explains how to divide decimals by decimals using skills learnt in previous lessons.
  • 09 Equivalent Calculations (20 slides): Explains how equivalent calculations can be used to find answers more easily. Explains how to use one calculation to find the answer to other, related calculations.
  • 10 Working with Negative Numbers (20 slides): Explains how to undertake all operations involving negative numbers, including how to compare and order negative numbers and the rules to follow when undertaking calculations using negative numbers.
  • 11 BIDMAS (13 slides): Explains the order in which operations are undertaken in mixed arithmetic calculations.
  • 12 Solving Wordy Problems (14 slides): Reviews words that imply the different operations of adding, subtracting, multiplying, and dividing; Explains techniques for solving wordy problems, and multi-step problems.
  • 13 Using a Calculator – The Basics (13 slides): Explains how you can use calculators to solve more complicated problems, and reviews how to interpret answers displayed on a calculator, linked with time and money.


  • Work on multiplying and dividing by powers of ten as well as standard form is also included in the Place Value and Approximations Pack.

Download Sample Material

apt4Maths PowerPoint on Calculations - Multiplying Decimals

Key Information

The purchase of this resource comes with a licence to make the resource available in digital and / or in print form (including photocopying) to the staff and students attending the purchasing institution, ie the individual school / college on a single site.

The resource may be distributed via a secure virtual learning environment. It must not be made available on any public or insecure website or other platform.

The resource must not be distributed to other institutions that are members of the same academy chain or similar organisation; each individual institution must purchase their own copy of the resource direct from APT Initiatives Ltd.

The resource (or any part of the resource) must not be distributed to any other individual or organisation in any form, or by any means. Any person who does any unauthorised act in relation to this publication may be liable to criminal prosecution and civil claims for damages.

Need help purchasing?

Email sales@apt-initiatives.com or call us on 01952 540877