خيارات التسجيل
Subtraction
Course modified date: 9 يونيو 2022
Learn about subtraction, subracting three digit numbers and subtracting using a range of methods. This course is ideal for intermediate learners.
Introduction
When you subtract numbers you use the subtraction sign. It is a small horizontal line.We use different words to describe subtraction.
For example, can be described as:
· 25 subtract 6 equals 19
· The difference between 35 and 6 is 29
· 30 take away 10 is 20
· 30 minus 10 is 20
· 19 is 6 less than 25
· If you decrease 25 by 6 you get 19
Subtraction is an arithmetic operation that represents the operation of removing objects from a collection. Subtraction is signified by the minus sign.Subtraction follows several important patterns. It is anticommutative, meaning that changing the order changes the sign of the answer. It is also not associative, meaning that when one subtracts more than two numbers, the order in which subtraction is performed matters.
You will learn
- Subtract three-digit numbers
- Subtract using a range of methods
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