Subtraction is basically an action of removing. This removal can be of any object like numbers from a group of numbers, or a person from group of persons etc. this action is commonly used in math. The objects that are taken away from the group are called the ‘subtracted’ objects and the objects that are remaining are called the ‘remaining’ objects.
1. The facts of zero
Zero is called the amazing number. Reason of this ‘amazing’ is that no matter whether the number zero is multiplied, added or subtracted from zero the answer is still zero. And whenever zero is subtracted from any other number the answer is still the number.
2. Basic subtraction
It can be amazing for new learners that the answer of subtraction of the basic numbers i.e. from 0 to 9 is always the single digit answers.
3. Property of self subtraction
This property is known as self subtracting property because if you subtract any number from itself the answer is always zero.
4. Fast mind
Mathematicians say that subtraction facts are not there to be memorized; some facts are there to understand. As soon as you understand the facts you would not need to memorize them. The only thing you need is a fast mind to catch these facts.
5. Use of finger
For kids who are new learners and their parents or teachers find it difficult to teach them the rules of subtraction, the parents or teachers teach them to count on fingers. Today doctors say that this is very good for brain to count on fingers because the sensors on the finger tips are directly connected with brain.
6. Bigger and smaller number
The most common tip used for subtraction without calculators is to think of a bigger number in mind and then think of a smaller number to subtract from the bigger one.
7. Rhymes
For kids it is very difficult to keep in mind the rules of subtraction, so some rhymes are made for them. These rhymes contain the rules and messages for kids which makes it easy for kids to solves the problem of subtraction.
8. Calculators
Counting on fingers and memorizing the rules is a really tough job and frankly speaking not so useful, this is why man has always tried to solve this ‘problem’ by making abacus, computers or mini calculators.
9. Subtraction games
If you search on Google, you would find different interesting games related to math. Most of these games are relation to subtraction problem.
10. Mental health
Games related to subtraction are good for mental health. When you solve these problems your mind gets oxygen and becomes healthy.