Operations on decimals (AQA GCSE Maths): Flashcards
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Practise the cards
10 cards from this deck
Three key operations on decimals
Three key operations on decimals
Adding/subtracting, multiplying, and dividing
Most important rule for adding/subtracting decimals
Most important rule for adding/subtracting decimals
Line up the decimal points correctly
Decimal point placement in add/subtract answer
Decimal point placement in add/subtract answer
Directly below the decimal points in the calculation
Adding zeros to end of decimals for alignment
Adding zeros to end of decimals for alignment
Allowed; helps line up place values (e.g., to )
First step when multiplying decimals
First step when multiplying decimals
Ignore decimal points; multiply as whole numbers
Decimal point placement in multiplication answer
Decimal point placement in multiplication answer
Count decimal places in both numbers; apply to answer
Key step when dividing by a decimal
Key step when dividing by a decimal
Convert the divisor into a whole number
How to make divisor whole in decimal division
How to make divisor whole in decimal division
Multiply both numbers by 10, 100, or 1000
Effect of multiplying both numbers in division
Effect of multiplying both numbers in division
The answer remains unchanged
Purpose of estimation in decimal operations
Purpose of estimation in decimal operations
To check if your answer is reasonable