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# Additions combinations of decimal and whole numbers Tricks

## Additions combinations of decimal and whole numbers

Shortcut tricks on addition combination of decimal and whole number are one of the most important topics in exams. Time is the main factor in competitive exams. If you manage your time then you can do well in those exams. Most of us miss that part. Few examples on addition combination of decimal and whole number shortcuts is given in this page below. All tricks on addition combination of decimal and whole number are provided here. Visitors are requested to carefully read all shortcut examples. These examples will help you to understand shortcut tricks on Addition combination of decimal and whole number.

Before starting anything just do a math practice set. Then find out twenty math problems related to this topic and write those on a paper. Do first ten maths using basic formula of this math topic. You also need to keep track of the time. After finish write down total time taken by you to solve those ten maths. Now read our examples on addition combination of decimal and whole number shortcut tricks and practice few questions. After finishing this do remaining questions using Addition combination of decimal and whole number shortcut tricks. Again keep track of timing. The timing will be surely improved this time. But this is not all you need. You need more practice to improve your timing more.

### Few Important things to Remember

We all know that the most important thing in competitive exams is Mathematics. That doesn’t mean that other sections are not so important. But only math portion can leads you to a good score. Only practice and practice can give you a good score. The only thing you need to do is to do your math problems correctly and within time, and this can be achieved only by using shortcut tricks. But it doesn’t mean that you can’t do math problems without using any shortcut tricks. You may have that potential to do maths within time without using any shortcut tricks.

But, so many other people may not do the same. For those we prepared this addition combination of decimal and whole number shortcut tricks. We try our level best to put together all types of shortcut methods here. But we may miss few of them. If you know anything else rather than this please do share with us. Your little help will help others.

Additions Combinations of Decimal and Whole Numbers Tricks
Additions is combination of two or more numbers to find the total or sum of those numbers. Here in this page we will discuss some Addition combination of decimal and whole numbers Shortcut Tricks.

### Example #1 – Additions Combinations of Decimal and Whole Numbers

7.7 + 7.77 + 7.777 + 7.7777 + 7.77777 + 7.777777 = ?

1. 44.675672
2. 45.556777
3. 46.580247
4. 47.464676

Show Answer Show How to Solve Open Rough Workspace

How to Solve

1. Take 7 Common and Replace all 7 with 1,
7(0.1 + 0.11 + 0.111 + 0.1111 + 0.11111 + 0.111111)
2. Count number of digits after the decimal place.
i.e, 0.1=1(digit), 0.11=2(digit), 0.111=3(digit), 0.1111=4(digit), 0.11111=5(digit), 0.111111=6(digit).
3. Write down all digits together but in reverse order like, 0.654321
4. Multiply 7×0.654321 = 4.580247
5. Now Multiply the Whole number with the total numbers present in the group.
i.e, 7 x 6 = 42
6. Now Add both the results together ( 4.580247 + 42 ) = 46.580247.
Rough Workspace

### Example #2 – Additions Combinations of Decimal and Whole Numbers

3.3 + 3.33 + 3.333 + 3.3333 = ?

1. 12.8564
2. 13.0464
3. 13.2963
4. 13.4646

Show Answer Show How to Solve Open Rough Workspace

How to Solve

1. Take 3 Common and Replace all 3 with 1,
3(0.1 + 0.11 + 0.111 + 0.1111)
2. Count number of digits after the decimal place.
i.e, 0.1=1(digit), 0.11=2(digit), 0.111=3(digit), 0.1111=4(digit).
3. Write down all digits together but in reverse order like, 0.4321
4. Multiply 3×0.4321 = 1.2963
5. Now Multiply the Whole number with the total numbers present in the group.
i.e, 3 x 4 = 12
6. Now Add both the results together ( 1.2963 + 12 ) = 13.2963.
Rough Workspace

### Example #3 – Additions Combinations of Decimal and Whole Numbers

4.4 + 4.44 + 4.444 = ?

1. 12.353
2. 12.734
3. 13.004
4. 13.284

Show Answer Show How to Solve Open Rough Workspace

How to Solve

1. Take 4 Common and Replace all 4 with 1,
4(0.1 + 0.11 + 0.111)
2. Count number of digits after the decimal place.
i.e, 0.1=1(digit), 0.11=2(digit), 0.111=3(digit).
3. Write down all digits together but in reverse order like, 0.321
4. Multiply 4×0.321 = 1.284
5. Now Multiply the Whole number with the total numbers present in the group.
i.e, 4 x 3 = 12
6. Now Add both the results together ( 1.284 + 12 ) = 13.284.
Rough Workspace

### Example #4 – Additions Combinations of Decimal and Whole Numbers

5.5 + 5.55 + 5.555 + 5.5555 + 5.55555 = ?

1. 27.71605
2. 27.93331
3. 28.34673
4. 28.88433

Show Answer Show How to Solve Open Rough Workspace

How to Solve

1. Take 5 Common and Replace all 5 with 1,
5(0.1 + 0.11 + 0.111 + 0.1111 + 0.11111)
2. Count number of digits after the decimal place.
i.e, 0.1=1(digit), 0.11=2(digit), 0.111=3(digit), 0.1111=4(digit), 0.11111=5(digit).
3. Write down all digits together but in reverse order like, 0.54321
4. Multiply 5×0.54321 = 2.71605
5. Now Multiply the Whole number with the total numbers present in the group.
i.e, 5 x 5 = 25
6. Now Add both the results together ( 2.71605 + 25 ) = 27.71605.
Rough Workspace

### Example #5

6.6 + 6.66 + 6.666 + 6.6666 = ?

1. 26.2331
2. 26.5926
3. 26.8832
4. 27.1267

Show Answer Show How to Solve Open Rough Workspace

How to Solve

1. Take 6 Common and Replace all 6 with 1,
6(0.1 + 0.11 + 0.111 + 0.1111)
2. Count number of digits after the decimal place.
i.e, 0.1=1(digit), 0.11=2(digit), 0.111=3(digit), 0.1111=4(digit).
3. Write down all digits together but in reverse order like, 0.4321
4. Multiply 6×0.4321 = 2.5926
5. Now Multiply the Whole number with the total numbers present in the group.
i.e, 6 x 4 = 24
6. Now Add both the results together ( 2.5926 + 24 ) = 26.5926.
Rough Workspace

Few examples of Addition Shortcut Tricks:

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1. priya says:

Example 3:
7.7+7.77+7.777+7.7777+7.77777+7.777777
The result of the addition is 7.7+7.77+7.777+7.7777+7.77777+7.777777 = 54.3580247.

Shortcut Tricks
Step 1: At First we can calculate the Decimal number 7 ( 0.7654321 ) = 5.3580247
Step 2: In Step 2 we can calculate the Whole numbers that is maximum number 7 digits is
= 7+7+7+7+7+7+7 So, 7 x 7 = 49
Step 3: Now we can add both result of step 1 and Step 2 = ( 49 + 5.3580247 ) = 54.3580247.

In the above sum question is in wrong format add 7.7777777 to above quation

• Thank u so much for valuable feedback priya , please recheck the problem

• MANIKUMAR says:

Thank u

• priya says:

Hello mam,upar jo ans dia h wo sahi h,aapne trick glt smjhi h ,basics se chech krke dekh lo

• sir, not mam and thank u

• NIKHIL says:

The correct answer of above que is 46.580247

• Kathir says:

there are only six 7’s are there. So, 7×6=42. and (7×0.654321)=4.580247.

So, 42+4.580247=46.580247 is correct

2. MANIKUMAR says:

Thank u very much
it is very useful
but a little bit confusion

3. so nyc and easy to way of solution trick , i like this

4. gayatri says:

Wonderful it’s very helpful to improve is.their any app is available? Please let me know if any available

5. NEELAM says:

THANK YOU SIR AND I HOPE THIS IS VERY
HELPFULL OF COMPITITION EXAM
REALY THANK FULL TO YOU

6. priya katyal says:

Really nice and helpful….i lv it

7. lingaa says:

How to do these kind of problem???
7.7+77.7+777.7+7777.7=?

8. SWAPNIL AGRAWAL says:

it’s very helpful for us.
thanks

9. ragul says:

WOW. Good it’s better than other

10. Susi S says:

Useful tricks. Thank u so much

11. Channabasavaraj says:

7(0.1+11.1+111.1+1111.1)
7(1233.4)
8633.8
7.0
=8640.8

12. Puja says:

These tricks are applicable for numbers below 10. What if the value exceeds 10? Can u help me please?