Maths Trick # 6 plays the multiplication of a 2 digit number by 11
Example #1 :
72 X 11
Step 1 : Separate the digits -- 7--2
Step 2 : Add up the digits -- 7 + 2 = 9
Step 3 : Insert the sum between the separated digits .
Then the product of 72 and 11 is 7 9 2
Example # 2
95 X 11
Step 1 : 9--5
Step 2 : 9 + 5 = 14
Step 3 : Here the sum of the digits is greater than 9 . So the unit digit of the sum is inserted into the gap and Tens is added to the Tens place of the number.
Then the result is 1045
= 495
Example # 4
76 X 11
= 836
Example #1 :
72 X 11
Step 1 : Separate the digits -- 7--2
Step 2 : Add up the digits -- 7 + 2 = 9
Step 3 : Insert the sum between the separated digits .
Then the product of 72 and 11 is 7 9 2
95 X 11
Step 1 : 9--5
Step 2 : 9 + 5 = 14
Step 3 : Here the sum of the digits is greater than 9 . So the unit digit of the sum is inserted into the gap and Tens is added to the Tens place of the number.
Then the result is 1045
Maths can be fun
Example # 3
45 X 11 = 495
Example # 4
76 X 11
= 836
Exercise :
1. 29X 11 2. 39 X 11 3. 62 X 11 (Calculation must be in the head)
These tricks are awesome and definitely save lot of time which is very helpful in exam and specially in competitive examination where time saving is very difficult so such tricks are very helpful.
ReplyDeleteIs 10 a Rational Number
Yes.
ReplyDeleteIn mathematics, a rational number is any number that can be expressed as the quotient or fraction a/b of two integers, with the denominator b not equal to zero. Since b may be equal to 1, every integer is a rational number.
So we can express 10 in this way ---10/1
Yes.
ReplyDeleteIn mathematics, a rational number is any number that can be expressed as the quotient or fraction a/b of two integers, with the denominator b not equal to zero. Since b may be equal to 1, every integer is a rational number.
So we can express 10 in this way ---10/1