Tag: Reasoning

Quicker Math: Adding large numbers

Quicker Math: Adding large numbers

Isn’t it amazing, if you can calculate faster in competitive exams or in daily life? In competitive exams you need to solve more number of problems in less time. So, people, nowadays running behind the coaching centers for shortcuts. But it is absolutely useless if you don’t have conceptual clarity. Here is the speed math rule for adding large numbers. Check other quicker math rules here.
Adding large numbers just in your head can be difficult. This method shows how to simplify this process by making all the numbers a multiple of 10. Here is an example:

644 + 238 = ?

While these numbers are hard to contend with, rounding them up will make them more manageable. So, 644 becomes 650 and 238 becomes 240.

Now, add 650 and 240 together. The total is 890. To find the answer to the original equation, it must be determined how much we added to the numbers to round them up.

650 – 644 = 6 and 240 – 238 = 2

Now, add 6 and 2 together for a total of 8

To find the answer to the original equation, 8 must be subtracted from the 890.

890 – 8 = 882

So the answer to 644 +238 is 882.

This is speed math trick 8. Please check other speed math tricks here.

Are you ready to play a brain game? Ok, that’s Equi Math for you. Click here to get the Android Game. This game will help in decision making in quick time. It is very easy at beginning and gets difficult on the higher levels. Try to reach as much higher level as possible. On game over, try again to improve your best. That way you will have quick solving skills.

Write down your feedback on comments section below.

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Quicker Math: Multiply any two-digit number by 11

Quicker Math: Multiply two-digit number by 11

Isn’t it fantastic to be able to compute faster in competitive tests or in everyday life? You have to answer more questions in less time on competitive exams. People are increasingly scurrying behind coaching centers in search of shortcuts. But without conceptual clarity, it is all completely pointless. The quick math formula to multiply any two-digit integer by 11 is as follows. Check other quicker math rules here.

Rule: Multiply any two-digit number by 11

There is an easy trick for multiplying any two-digit number by 11. Here it is:

11 x 25

Take the original two-digit number and put a space between the digits. In this example, that number is 25.

2_5

Now add those two numbers together and put the result in the center:

2_(2 + 5)_5

2_7_5

The answer to 11 x 25 is 275.

This is quicker math trick 7. Please check other speed math tricks here.

If the numbers in the center add up to a number with two digits, insert the second number and add 1 to the first one. Here is an example for the equation 11 x 88

8_(8 +8)_8

(8 + 1)_6_8

9_6_8

There is the answer to 11 x 88 = 968

Are you ready for a brain game? Ok, that’s Equi Math for you. Click here to get the Android Game. This game will help in decision making in quick time. It is very easy at beginning and gets difficult on the higher levels. Try to reach as much higher level as possible. On game over, try again to improve your best. That way you will have quicker solving skills.

So, this was the rule to multiply any number by 11. Write down your feedback on comments section below. Also check the other speed math rules for faster calculations.

Don’t forget to share. Please subscribe to Mathkind here for math tricks and help.

Quicker Math Squiring Numbers

Quicker Math: Square of numbers 51 to 59

Isn’t it fantastic to be able to compute more quickly in everyday situations or on competitive exams? You have to answer more questions in less time on competitive exams. People are increasingly scurrying behind coaching centers in search of shortcuts. But without conceptual clarity, it is all completely pointless. This is the quicker math formula for calculating the square of numbers between 51 and 59. Check other quicker math rules here.

There is a simple rule to find the square of numbers from 51 to 59. Like many other Vedic Mathematics methods, in this method also, we will get the answer in two parts. Since the numbers are in 50s and square of 50 is 2500, we will just use 25 in our calculations, ignoring the zeros.

To get the first part of the answer, add the digit at the units place to 25 and write the sum
To get the second part, calculate the square of units place digit and write it

Using an example will make this easier to understand.

To find the square of 57 :

First part: 25 + digit at units unit in 57 = 25 + 7 = 32

Second part: square of 7 = 49

Combining both the parts – 3249 is the answer.

Practice Suggestions:

After knowing the trick, check how fast you can square such numbers in your head, but doing several examples.

More examples:

Ex 1: (51)2 = 25+1|12 = 26|01 = 2601
Ex 2: (52)2 = 25+2|22 = 27|04 = 2704
Ex 3: (54)2 = 25+4|42 = 29|16 = 2916
Ex 4: (59)2 = 25+9|92 = 34|81 = 3481

This is quicker math trick 2. Please check other speed math tricks here.

General Representation:

(5N)2 = (25+N)|N2 ; where N 2 should be written as two digit number.

Are you ready to play a brain game? Ok, that’s Equi Math for you. Click here to get the Android Game. This game will help in decision making in quick time. It is very easy at beginning and gets difficult on the higher levels. Try to reach as much higher level as possible. On game over, try again to improve your best. That way you will have quick solving skills.

Don’t forget to share. Please subscribe to Mathkind here for math tricks and more puzzles.

Please share your thoughts and feedback on this, in comments section below.

Odd Man Out 1

Odd Man Out 1

Odd Man Out or Classification is to assort item of a given group as per their common quality and pick the one which doesn’t have the quality.

This is the first set of Odd Man Out. In this test, you are given a group of certain items out of which all except one are similar to one another in some manner. You need to find out the item which does not fit into the given group.

  1. Find the odd one out of a.Butter b.Curd c.Oil d.Cheese
  2. Find the odd one out of a.Copper b.Tin c.Brass d.Platinum
  3. Find the odd one out of a.Fox b.Wolf c.Jackal d.Dear
  4. Find the odd one out of a.Pineapple b.Banana c.Orange d.Lemon
  5. Find the odd one out of a.Nun b.Knight c.Monk d.Priest

Tap « and » buttons on left and right side of your screen for next and previous puzzles.

Check the solutions here.

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