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Answered on 06/08/2019 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics Shashi Bhushan Mishra

Ambitious,enthusiastic and excellent classroom practitioner.Senior Physics and Chemistry Faculty.

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Answered on 12/08/2019 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics Harsh Goyal

2000 Rs per month
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Lesson Posted on 17/03/2017 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics Amrtha Shashidhar

I am an experienced, qualified teacher and tutor with over 1 year of experience in teaching from Grade...

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... read more

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.

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.

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Lesson Posted on 17/03/2017 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics Amrtha Shashidhar

I am an experienced, qualified teacher and tutor with over 1 year of experience in teaching from Grade...

What are the strategies to calculate mental math subtraction?The tricky strategies to calculate subtraction 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... read more

What are the strategies to calculate mental math subtraction?

The tricky strategies to calculate subtraction 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 subtraction easily and conveniently. Use mental math strategies to calculate subtraction to sharpen your mental maths skills.

Here are some easy examples in which mental subtraction skills are used.

Problems to calculate mental math tricks for subtraction:

1. Subtract 27 from 73.

Solution:

73 – 27

= 73 + 99 – 27 – 99

= 73 + 99 – 27 – 100 + 1

= 73 + (99 – 27) - 100 + 1

= 73 + 72 - 100 + 1

= (73 + 72) – 100 + 1

= 145 - 100 + 1

= 45 + 1

= 46

Therefore, 73 – 27 = 46

For the solution we deduct 27 from the highest two-digit number.

 99           -   27               72           +  73             145          -  100               45          +     1                46 Now 73 is added to 72 (72 + 73 = 145) Again from the sum 100 is deducted and then 1 is added. 72 + 73 → 145 – 100 → 45 + 1 = 46 This 46 is the subtracted result of 73 – 27

2. Subtract 93 – 67

Solution:

93 + (99 – 67) – 100 + 1

= 93 + 32 - 100 + 1

= (93 + 32) – 100 + 1

= 125 – 100 + 1

= 25 + 1

= 26

Therefore, 93 – 67 = 26

3. By backward counting subtract 5 from 19.

Solution:

19

-  5
14

19 – 5

= 19 –  I,     I,      I,      I,      I

18,    17,   16,    15,    14

Therefore, 19 – 5 = 14

4. Find the difference of 53 – 29

Solution:

53           59     →    30      →

-  29          -29             -  6
30               24

Hence,          53

–     29
24

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

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Lesson Posted on 21/02/2017 CBSE/Class 10/Mathematics Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics +2 Amrtha Shashidhar

I am an experienced, qualified teacher and tutor with over 1 year of experience in teaching from Grade...

Exponential Form = 100 = 102, where 2 is the power of 10. Laws of exponents: a-m = 1/ am a m * an = am*n am * an = am*n (am)n = am*n am / bm = (a/b)m a0= 1 (a / b)-m = (b/a)m (-1)odd = -1 (-1)even = 1 ( am / an ) = am-n read more

Exponential Form = 100 = 102,

where 2 is the power of 10.

Laws of exponents:

1. a-m = 1/ am
2. a m * a= am*n
3. am * a= am*n
4. (am)= am*n
5. am / b= (a/b)
6. a0= 1
7. (a / b)-m = (b/a)
8. (-1)odd = -1
9. (-1)even = 1
10. ( am / an ) = am-n

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Answered on 31/12/2016 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics X%of y= x/100*y.
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Answered on 27/10/2016 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics 360cm
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Lesson Posted on 12/09/2016 CBSE/Class 10/Mathematics CBSE/Class 12/Science/Mathematics Tuition/Class IX-X Tuition +5 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics Tuition/Class VI-VIII Tuition Tuition/Class VI-VIII Tuition/Mathematics Tuition/Class XI-XII Tuition (PUC) less First thing i would like to say that once i take ur responsibility i will work with u till ur fulfilment...

Its understanding of urs about the maths that matters a lot. There are some learning tips which helps you a lot. 1. Be relaxed and dont take too much tension. 2. Try to learn concept first and then think over it . 3. Write formulaes of maths in a A4 sheet and paste in your bed room and recall all... read more

Its understanding of urs about the maths that matters a lot.

There are some learning tips which helps you a lot.

1. Be relaxed and dont take too much tension.

2. Try to learn concept first and then think over it .

3. Write formulaes of maths in a A4 sheet and paste  in your bed room and recall all while taking rest.

4. Do as much practice u can .

So  these r some of the basic tips which will help you to stand out the tough.

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Answered on 30/08/2016 CBSE/Class 10/Mathematics Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics +1 Aparna G.

MBA Finance trainer

Join Urbanpro because it is very reasonable in comparison to others or u can join some bureaus who are providing tuition services. U can find those bureaus on Facebook page to search over there as HOME TUTORS title.
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Answered on 01/01/2018 Tuition/Class I-V Tuition Tuition/Class I-V Tuition/Mathematics Highly Qualified Tutor

12 + 11 = 23
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