# apt4Maths: PowerPoint Presentation on Calculations – Multiplying Decimals – for GCSE (and Key Stage 3) Mathematics

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This is the 6th PowerPoint Presentation only of the full set of 13 PowerPoint Presentations on Calculations for GCSE (and Key Stage 3) Maths. This PowerPoint explains how to multiply decimals together (by applying place value skills and multiplication skills previously learnt).

The full set of 13 PowerPoint Presentations on Calculations can be purchased from www.apt-initiatives.com

#### Product Information

The full set of 13 PowerPoint Presentations on Calculations (205 slides, excluding Title Pages) covers the following 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). INCLUDED in this download
• 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.