More Lessons for GCSE Maths
Videos, games, activities and worksheets that are suitable for GCSE Maths.
How to add and subtract directed numbers?
Rule 1: If the signs are the same then add the numbers and keep the original sign.
Rule 2: If the signs are different then subtract: Big number minus small number. Keep the sign of the big number.
How to multiply and divide directed numbers?
Rule 1: The answer is positive when all the numbers are positive or when there is an even number of negarive signs in the problem.
Rule 2: The answer is negative when there is an odd number of negative signs in the problem.
Directed Numbers Adding and Subtracting
Directed Numbers Multiplying and Dividing
Rules for adding, subtracting, multiplying and dividing positive and negative numbers.
GCSE Maths - Negative Numbers (Adding, Subtracting,Multiplying, Dividing)
You can use the Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.