Maths Updates

CBSE Class 1 Maths Worksheet

Add the following numbers and find the answer to the following questions:

1+2+2+3+5=

5+4+6+9+6=

3+6+3+6=

4+3+6+9=

5+6+3+9+6=

4+3+3+2+1=

3+6+9+7+8=

3+6+9+5+6+4=

1+2+3+5+6+9=

5+6+9+6+3+4=

3+2+4+6=

2+3+2+3=

1+2+3+5+6=

3+2+1+3+6=

4+2+3+3+6=

12+45+65+25=

12+36+96+89=

12+36+35+65=

32+36+25+14+12=

Trick to memorize the table of 9

Step 1 : start writing from 0 to 9 in the ten's place

0

1

2

3 

4

5

6

7

8

9

Step 2: then write from 9 to 0 in the unit place 

For example - 

0 9 

1 8

2 7

3 6

4 5

5 4

6 3

7 2

8 1

9 0

Now see the table is ready of 9 

9*1 = 09

9*2 = 18

9*3 = 27

9*4 = 36 

And so on as given above .

To learn more tricks connect with me :)

VOLUME OF CYLINDER :-

If, radius of cylinder=r

    height of cylinder=h

Then,

VOLUME OF THE CYLI NDER=πr2h

Ex:- 

If, radius of cylinder=r=35cm

    height of cylinder=h=10cm

Then, VOLUME OF THE CYLI NDER=πr²h

                                                     =(22/7)x35x35x10

                                                      =22x5x35x10

                                                       =38500 cm3 

Numbers

To start with the topic of maths, today we will study about Numbers.

Now, to start with maths - the first thing you must know is the numbers and category they fall in.

What is the number?

A number is a group of the digit. Digit being 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

Types of numbers

1)Natural number - {1, 2, 3, 4, 5.......} is a natural number. It is denoted by 'N'.

2)The whole Number - {0, 1, 2, 3.....} Remember if we include 0 in the set of the number then we will get the whole number.

Note: 0 is an only whole number which is not a natural number.

3)Integers - {..... - 4, - 3, - 2, - 1, 0, 1, 2, 3, 4........} Ok, so in Integers negative numbers are also included.

Positive Integer = +1, +2, +3......

Negative Integer = - 1, - 2, - 3.....

Note: 0 is neither positive nor negative number.

4) Rational Number - It is represented in the form of p/q where p and q both are integers and q ≠ 0

E.g.: 4/2, - 5/3.

When we convert the Rational number into the decimal, it behaves differently.

Terminating Decimal: 1/2 can also be written be like 0.5. That is when we divide 1 by 2 it does end giving 0.5 as a quotient.

Non-Terminating Decimal: 1/3 can also be written as 0.3333... that is when we divide 1 by 3 it will have no end and 3 will be repeated again and again.

5) Real Number - All natural number, whole number, integers, rational and irrational numbers are the real number.

Even Number: All number that comes in the table of 2 or let say all number that is divisible by 2 is an even number. Eg: - 4, 2, - 8 etc.

Odd Number: All number that does not fall in the table of 2 or is not divisible by 2 is called an odd number. Eg: - 7, - 9, 3, 5 etc.

Aforementioned is all just common sense, and you might have heard about this earlier also. Still just writing to remind you again.
First things first:-

1. Believe in yourself:

Always have trust in your capabilities and calibre. You have the potential to achieve whatever you want. Never let anyone tell you can't do something, you got a dream, you've got to protect it.(pursuit of happiness famous dialogue)

2. Learn from your mistakes:

What we generally do is trying similar thing or way again and again which leads to unsatisfactory results. Do analyse your technique every time and find out errors/causes of failure then work again with full zeal.
An ant falls hundreds of times before reaching the top of the wall but never loses faith, hence succeeds

3. Dedication:

Whenever you study, give your best. Never use WhatsApp, Facebook, Quora and if possible avoid phone/laptop while studying. These things only distract you away from your goal. There must not come anything between you and your target. Study hard for it such that at the result declaration day when you face yourself in the mirror, you can see in the eyes and tell yourself, yes I gave my 100%.

4. Aim big:

Always dream big as bigger is the goal, larger is the efforts, hence bigger will be the success.

Yes I know I am not talking specifically about basic mathematics, but this practice is applicable for every task you perform. Do try this and tell me about the result.

I will explain a simple and fastest process of multiplication. This can help you to get answers faster.

Let's assume you have to multiply 9999 X 2456.

Now think how much time it will take? Maybe 30 sec. or 50 sec. or more as well.. 

Now try this:

    9999

 x 2456

---------------

24557544

I didn't use any calculator. let me explain the steps.

Step 1. Subtract 6 (last number) from 10 = 4 (10-6)

Step 2. Rest numbers you can subtract from 9, so (9-5) , (9-4) , (9-2) = 4 , 5 , 7

Step 3. Now subtract 1 from 2456 = 2457

Step 4. You got the answer. i.e 2457 754 4

This is just a small example and this will only work if you have one multiplier with 9's only. I know you won't get always similar but for other, there is a different rule. I hope i will get another quick lesson for that. Or reach me to learn this types of tricks which can make your life easy.