Mental maths is the simple calculations you can perform in your brain. This does not need tables or calculators to get answers. There are many benefits of engaging in such mathematics like: you get your answers fast. For instance, in an exam situation you might be able to calculate some of the problem easily. This helps you to save time to concentrate on the problems that need extra time. This can result to good grades in the subject.
Other than the classroom, one can use mental maths in different aspects in your daily life. When you are out shopping for a few items, you can use this to help you come with the total amount of money that you will spend. This allows you to stay within the budget that you had as you only use the amount of money you have. It also saves you the embarrassment of having to return items when you are at the counter because you do not have enough money. You can also calculate discounts in your head when you are out eating or shopping. This is necessary to avoid confrontations with people because of the price.
Performing mental maths helps one to be more attentive and sharpens your critical skills. This should be taught to children especially at a tender age. When children learn the subject, it will help them be good in mathematics, a subject that is disliked and performed poorly by a majority of students. This is because it improves their confidence in the subject and makes it more enjoyable. This also helps to improve a sense of achievement within the children once they are able to come up with problem answers without using too much effort.
One of the greatest benefits of the subject is it enhances intuitive thinking and creativity. This helps one to think out of the box. You can come up with creative ideas that can help you be successful in life. These also help one to gain mental endurance and improved concentration. It also increases the interest of many students in mathematics. This is because they learn other techniques other than the normal routine. Some of the alternatives emerge from the Asian continent where teachers use verdict and Abacus maths to help improve mental maths skills. This is where your child can be able to come up with the solution of a complicated sum in seconds.
In recent times, definitions of mental maths vary, with some referring to it as memorizing the timetable, remembering part or whole solutions to mathematical problems or simple, mental mathematic calculations. There are a number of benefits attributed to practicing mental mathematics, one of them being that it is a perfect form of mental exercise. It is a well known fact that an idle mind is the devil’s workshop, something attested by the fact that idleness brings about laziness. Once you practice engaging in mental mathematics on a regular basis, your brain ends up being alert.
Another great benefit associated with mental maths is the fact that it sharpens your memory. When asked to give the product of 2×3 you will quickly conclude that it is six. From your own observation, that is something you need not waste much time calculating since it is very simple. Unknown to you is that you never worked to get the answer, but it is in your mind ever since you were a kid because of memorizing the multiplication table. That is a simple example of some of the things you have memorized. With such ability, you can easily memorize lots of information.
You have most probably heard of the maxim that in this world only the fittest shall survive and this leads to adaptation to accomplish a lot in minimal time. Though not in direct relation to that, mental maths is such that it helps you get quick solutions to situations as they arise. Bearing in mind that you can be able to perform both simple and complex arithmetic mentally puts you in a position where you can easily come up with split second decisions or even solutions to situations.
It also goes without saying that those who engage in mental maths are usually better placed to develop a liking for mathematics in general. It is a well known fact that most people would want nothing to do with mathematics once they are through with school. It is also however a proven fact that those who engage in mental arithmetic from a tender age are better placed to develop a strong liking for the subject and end up pursuing it to the end. Children who are great performers when it comes to mental maths also show great strength in other areas as well. This is a clear indication that it aids in general development besides also reducing stress levels.
When it comes to performance of mental math subtraction, excelling is not a matter of chance but rather of choice. The student must aspire to be good at it and find means through which to achieve this end. There are simple things which if overlooked can derail you from this goal and by exploring them; it becomes easy to learn how to solve these equations. Almost all errors that occur in subtraction involve the step where one has to borrow and carry digits. As such, if these mistakes are to be completely eliminated, then the aspect of borrowing and carrying has to be completed eliminated.
Zero is the easiest number to subtract is the easiest number to subtract. This is for the simple reason it does not require borrowing. As such, when carrying out mental math subtraction, it is advisable to end the second number with a zero. Consider the following examples:
- If 2 is added to 28, the answer is 30. Subtracting 30 from 53 mentally is also easy. The answer is 23. However, this has 2 units that are too small and as such, implies that more has been taken away from the problem.
- To compensate on this, the 2 should be added to the answer. Therefore that will be 23 + 2 = 25
- As such, to ensure that 53-28 is carried out efficiently mentally the equation should be 53 – 30 + 2 =25.
Though there are students who might find this hard, the algebra behind it is quiet simple and straightforward. One should start with a – b then proceed to add another number n to the b which gives translates to a -b +n. this therefore means that the number is large by the n fraction. To compensate for this, one has to subtract n from the final answer and this delivers an equation like this: (a – b + n) – n. Note that n – n = 0. As such, this means that the mental math subtraction was carried out without necessarily having to borrow.
By using this method, 90% of the subtractions you have to deal with mentally are solved and needless to say with so much ease. This is especially true when handling some of those small subtractions that people come across on a daily basis. Though this is the case, it is important to state that for other complex subtractions, it might be considered efficient to use borrowing and carrying techniques.
All students need the ability to mentally calculate math because it is important for them, especially so for those students who are blind or visually impaired. Quite a number of strategies in the calculation of mental math are available and students can learn this starting from when they begin to count and deal with simple numbers. One of the most important things for the students to understand before they start manipulating these numbers in their minds is the concept of complements. These complements also known as partners of numbers are useful in aspects such as addition, subtraction, multiplication and division.
There are four basic approaches that teachers can use to help the students get the mental math strategies. One of these is decomposing numbers, which involves breaking down of different numbers into simple units that can be easily recomposed. The other approaches is making numbers easier to work with, substituting numbers and compensating.
When it comes to addition, the students can use some of the strategies such as adjusting numbers to make it easier for them to add. When handling large numbers, the students can simplify their addition by adding tens’ first, hundreds next and so on. They can also use the additive principle, doubles and facts for numbers that are up to 10 as well as derive other facts from these additions, for example, 3+2 is 1 less from 3+3. In adding nine, the students need to keep in mind that the digit of the sum is one less from the value of the number added to it.
In subtraction, there are a number of strategies that students can use. Using the concept of complements, they can start subtracting the partners of numbers up to 10; continue to numbers from 20 and subtracting two digit numbers from 100 before moving to other larger numbers. The other strategy is to subtract numbers from smaller units that are closer to the subtrahend and then adding the remaining portion, for example, 9-3 can be done as 9-6 then adding the remainder, which is 3.
For multiplication, children will need to know that multiplication is continued addition and use this concept in finding answers. Associative properties of the factors in this calculation and the doubles are also important. Division requires the concept of partners. The students will also be required to deal with larger units within the factors and add the progressive products. These concepts are very useful in ensuring that the students find their way around mental math.