UrbanPro
true

Find the best tutors and institutes for Class I-V Tuition

Find Best Class I-V Tuition

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Outside India?

Search for topics

Mental Maths Addition

Amrtha S.
17/03/2017 0 0

What are the strategies to calculate mental math addition?

The tricky strategies to calculate addition mentally in your head is an important part in mathematics.  Year-by-year practicing will help us to learn how to use mental math tricks or techniques in an appropriate way.

Tips: Practice whenever you get free time in school, at work, etc.,

There are some skills, which are used to solve the questions of addition easily and conveniently. Use mental math strategies to calculate addition to sharpen your mental maths skills.

Here are some examples in which mental math addition skills are used

Problems to calculate mental math tricks for addition:

1. Add 4 + 8

Solution:   

4 + 8 = 8 + 4

4 + 8 = 8 + I, I, I, I

         = 8, 9, 10, 11, 12

Therefore, 4 + 8 = 8 + 4 = 12

 

 

Instead of adding 8 to 4, 4 is added to 8 as 4 + 8 = 8 + 4.

While calculating mentally, we go to count four numbers ahead.

2. Add 5 + 17

Solution:

We know that, 5 + 17 = 17 + 5

So, 17 + (I, I, I, I, I)

= 17, 18, 19, 20, 21, 22

Therefore, 5 + 17 = 17 + 5 = 22

 

 

Instead of adding 17 to 5, 5 is added to 17 as 5 + 17 = 17 + 5.

While calculating mentally, we go to count five numbers ahead.

3. Add 8 + 5 + 3

Solution:

8 + 5 + 3 = 8 + 3 + 5

= 11 + 5

= 16

Therefore, 8 + 5 + 3 = 8 + 3 + 5 = 16

 

Instead of adding 8 + 5 + 3 we arrange the numbers as 8 + 3 + 5 then, 8 + 3 = 11 and 11 + 5 = 16

4. Add 70 + 40

Solution:

70 + 40

= 110

 

Only the digits at ten’s place are added, if the numbers are the multiples of 10.

Zero is placed at one’s place in the addition result.

5. Add 60 + 35

Solution:

60 + 35

= 60 + 30 + 05

= 90 + 05

= 95

Therefore, 60 + 35 = 95

 

 

 

Numbers are split in tens and ones.

Sum of tens and sum of ones are added.

6. Add 67 + 43

Solution:

67 + 43

= (60 + 7) + (40 + 3)

= 60 + 40 + 7 + 3

= 100 + 10

= 110

Numbers are split in tens and ones and then do addition.

 

      or,
                  67

                  43
                  10 (7 + 3)

                 100 (60 + 40)
                 110

Sum of ones and sum of tens both are added.

7. Add 39 + 53

Solution:

39 + 53

= 39 + 1 + 53 – 1

= 40 + 52

= 92

The above tricky strategies will help us to calculate mental math addition to sharpen the math skills to perform easily.

0 Dislike
Follow 1

Please Enter a comment

Submit

Other Lessons for You

Sandhi (संधि)
( + ) ' ' ( ) , ...

Arun | 26 Jul

1 0
0

Science class v Unit 1: Human Body
THE CIRCULATORY SYSTEM * Introduction about circulatory system * parts of it Blood Blood vessels ...

Deepa R. | 08/11/2020

0 0
0

Lesson on EVS
EVS FOR CLASS III STANDARD Chapter: Living and non-living things Introduction: We observe many things in nature, outside and inside of our house. All these things are categorised into two essential parts...

Shilpi B. | 14/09/2020

1 0
0

दीर्घ सन्धि
( , ) ( , ) ‘ ‘ , ( , ) ( , ) ‘ ‘ , ( , ) ( , ) ‘ ‘...

Arun | 08/07/2020

1 0
0

Looking for Class I-V Tuition ?

Find best Class I-V Tuition in your locality on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
Sponsored
X

Looking for Class I-V Tuition Classes?

Find best tutors for Class I-V Tuition Classes by posting a requirement.

  • Post a learning requirement
  • Get customized responses
  • Compare and select the best

Looking for Class I-V Tuition Classes?

Find best Class I-V Tuition Classes in your locality on UrbanPro

Post your learning requirement

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more