Mental Math Addition
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, 43 100 (60 + 40) 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.
Worksheet on Mental Math on Addition:
1. 6298 + 1246 = 7544. Here, addends are __________ and __________ .
2. 5,914 + 6,890 = 6,890 + __________
3. Find the sum of the greatest 3-digit number and the smallest 4-digit number.
4. Find the sum of the place-values of 5s in 35926 and 567.
5. What number should be added to the greatest 3-digit number to get the smallest 4-digit number?
6. 5 thousand = 4 thousands + _____ hundreds.
7. Find the sum of the smallest 4-digit, 3-digit and 2-digit numbers.
|
8. Write numbers from 1 to 9 in the magic square so that the sum of the numbers in each row, in each column and diagonally may be 15. |
 |
9. Find the value of each word by adding:
One has been done for you.
M
O
N
S
T
E
R
1
2
3
4
5
6
7
|
(i) (ii) (iii) (iv) (v) |
ME ON MEN NOSE TENT |
= = = = = |
__1___ + __6___ = __7___ _____ + _____ = _____ _____ + _____ + _____= _____ _____ + _____ + _____ + _____ = _____ _____ + _____ + _____ + _____ = _____ |
10. Find the blanks using addition facts.
(i) 875 + _____ = 875
(ii) 154 + _____ = 154
(iii) 9231 + 0 = _____
(iv) 5349 + 1 = _____
(v) 2321 + 1427 = _____ + 2321
(vi) 1110 + _____ = 1230 + _____
Answer:
1. 6,298 and 1,246
2. 5,914
3. 1,999
4. 5,500
5. 1
6. 10
7. 1,110
8. 1st row: 6 1 8
2nd row: 7, 5, 3
3rd row: 2, 9, 4
9. (ii) 2 + 3 = 5
(iii) 1 + 6 +3 = 10
(iv) 3 + 2 + 4 + 6 = 15
(v) 5 + 6 + 3 + 5 = 19
10. (i) 0
(ii) 0
(iii) 9231
(iv) 5350
(v) 1427
(vi) 1230; 1110
Related Concepts
You might like these
3rd Grade Number Worksheet |Practice the Questions on Numbers with Ans
3rd grade number worksheet will help the kids to practice the questions on numbers. Fill in the blanks: Write in words: Write in numerals: Write > or =, < between the given numbers:
Four Digit Numbers | What are 4-Digit Numbers? | Numerals and Words
What are four digit numbers? We may divide 4-digit numbers in 9 groups. (i) 1000 to 1999 (one thousand to one thousand nine hundred ninety nine)
Four-digit Numbers in Numerals and Words | Write four Digit-numbers
How to write four digit-numbers in numerals and words? There are four digits in a four-digit number. According to their values, the digits are placed from right to left at one’s place, ten’s
Comparison of One-digit Numbers | Arranging 1-digit Numbers|Face Value
What are the rules for the comparison of one-digit numbers? The comparison of one-digit numbers depends on their values. The value of a number is found by adding the place values of the digits.
Comparison of Three-digit Numbers | Arrange 3-digit Numbers |Questions
What are the rules for the comparison of three-digit numbers? (i) The numbers having less than three digits are always smaller than the numbers having three digits as:
Compare Two Numbers | Examples for Comparison of Numbers | Video
How to compare two numbers? Comparing two numbers means finding which number is smaller and which number is greater. It is represented by symbol (>) or (<). When you compare two numbers and they are same then the numbers are equal and symbolized as (=).
Face Value and Place Value|Difference Between Place Value & Face Value
What is the difference between face value and place value of digits? Before we proceed to face value and place value let us recall the expanded form of a number. The face value of a digit is the digit itself, at whatever place it may be.
Worksheet on Forming Numbers with Digits | Smallest & Greatest Numbers
In the worksheet on forming numbers with digits, the questions will help us to practice how to form different types of smallest and greatest numbers using different digits. We know that all the numbers are formed with the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
Estimating a Sum | Round the Number | Numbers by Rounding | Estimating
We will learn the basic knowledge for estimating a sum. Here we will learn an easy way to estimate a sum of two numbers by rounding. In case of two digit numbers we can only round the number
Worksheet on Subtraction Word Problems | Subtraction Word Problems
The activity provided in the third grade math worksheet on subtraction word problems is very important for the kids. Students need to read the questions carefully and then translate the information
Worksheet on Mental Math Subtraction |Subtract by Using Trick & Skills
Practice the tricky questions given in the worksheet on mental math subtraction. Try to subtract by using the trick and skills so that the benefits can be enjoyed by both kids and adults.
Worksheet on Adding 3-Digit Numbers | Adding 3-digit Problems |Answers
Practice the questions given in the worksheet on adding three digit. The questions are based on adding 3-digit problems that do not require regrouping (no regrouping) where 3 addends are needed to arrange in a vertical order to add easily. We first arrange them one below the
Addition of 4-Digit Numbers | 4-Digit Addition |Adding 4-Digit Numbers
We will learn about the addition of 4-digit numbers (without carrying and with carrying). We know how to add 2 or 3, 3-digit numbers without carrying or with carrying.
Worksheet on Addition of 4-Digit Numbers | 4 Digit Addition Worksheets
Practice the questions given in the worksheet on addition of 4-digit numbers. Here we will add two 4-digit numbers (without carrying and with carrying) and three 4-digit numbers
Word Problems on 4-Digit Numbers |Addition and Subtraction of 4-Digits
We will solve here some of the word problems on addition and subtraction of 4-digit numbers. We will apply the same method while adding and subtracting the word problems. 1. In a village, there are 2520 males and 1840 females.
From Mental Math Addition to HOME PAGE
Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.
Recent Articles
-
Worksheet on Mixed Addition and Subtraction | Questions on Addition
Jan 12, 25 02:14 PM
In worksheet on mixed addition and subtraction the questions involve both addition and subtraction together; all grade students can practice the questions on addition and subtraction together. -
Estimating Sums and Differences | Estimations | Practical Calculations
Jan 12, 25 02:02 PM
For estimating sums and differences in the number we use the rounded numbers for estimations to its nearest tens, hundred, and thousand. In many practical calculations, only an approximation is requir… -
Combination of Addition and Subtraction | Mixed Addition & Subtraction
Jan 12, 25 01:36 PM
We will discuss here about the combination of addition and subtraction. The rules which can be used to solve the sums involving addition (+) and subtraction (-) together are: I: First add -
Checking Subtraction using Addition |Use Addition to Check Subtraction
Jan 12, 25 01:13 PM
We can check subtraction by adding the difference to the smaller number. Since the sum of difference and smaller number is equal to the larger number, subtraction is correct. -
Worksheet on Subtraction of 4-Digit Numbers|Subtracting 4-Digit Number
Jan 12, 25 09:04 AM
Practice the questions given in the worksheet on subtraction of 4-digit numbers. Here we will subtract two 4-digit numbers (without borrowing and with borrowing) to find the difference between them.
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.