Integers Lesson 2



INTEGERS

Good morning students.

I am sure you did yesterday’s HW. For those who were not very sure of their answers check them online.

A few guidelines to go through the blog.

  1. the text in blue is to be written in your MATHS Notebook.
  2. the text in violet is to viewed by clicking on it.

The students will be able to -

-  Know the additive inverse of an integer

- Check whether the given 3x3 square is a Magic Square or not
- Comparision of integers after performing the operation of addition and subtraction on them

Explanation

The additive inverse of a number a is the number that, when added to a, yields zero. This number is also known as the opposite (number), sign change.  
                                                                                                                                                                 Answers                                
(i) Additive inverse of −83 =                  −(−83) = 83          


(ii) Additive inverse of 256 =                 −(256) = −256

                                                   
(iii) Additive inverse of 0 =                    
−(0) = 0                                         

(iv) Additive inverse of 2001 =              −(−2001) = 2001 

                                                       
Click on the link for Q8(i)



Try Ex 1.1 Q8(ii),(iii),(iv)

Magic Square is an arrangement of numbers in a particular way in square grid.
To check whether a given grid is a magic square or not 
1. Find sum of numbers in both the diagonals
2. Calculate sum of each rows and columns.
3. If the sum of numbers in both the diagonals  is equal to every row’s sum and every column’s sum, then it is magic matrix.
Look at the magic square given below


Try doing Q7 
Question 9.Use the sign of >, < or = in the box to make the statements true:

(a)  
Ans.L.H.S = 84                                 R.H.S = 8+4
                     = -12                                          = - 4
                                         –12 < 4
Try doing Q9 (b),(c),(d),(e)  
Home Assignments

Now you should be able to complete NCERT Ex. 1.1 Q7,8,9

Fun Activity     https://www.youtube.com/watch?v=zPnN046OM34

Comments

  1. Good Morning Sir
    Kevin Tom Benoy 7B

    ReplyDelete
  2. Good afternoon sir
    Nishit Kedia

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  3. Good Afternoon Sir
    Manmeet Singh student of Class 7B

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  4. Good Morning Sir.
    Aarav Bansal

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  5. Sir, do we have to do the written work in a chemistry notebook?

    ReplyDelete
    Replies
    1. I suppose is a maths class going on.

      Delete
    2. Sir, in the blog (at the top) you have written to do the work in a chemistry notebook.

      Delete
    3. THANKS FOR POINTING OUT THE MISTAKE. IT WAS TYPING ERROR. THANKS YOU BETA

      Delete
  6. Good morning Sir,
    Jatin Giroti 7B

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  7. Good morning sir Vincent Anthony Paul from class 7-B

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  8. Good morning sir Armaan Arora

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  9. Good morning sir Vaibhav Vij 7B

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  10. Sir do we have to make a separate notebook for chemistry

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  11. Good morning sir .I am Aaron Xavier Jomon

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  12. Good morning sir Kanav Kapoor 7B

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  13. Good evening sir . Atyab khan 7B

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  14. GOOD MORNING SIR, ALOK M. TIRKEY

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  15. Good morning sir Aryan 7B

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  16. Sorry sir good morning sir
    Krishna Rawat7B

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  17. Good morning sir, Sol Kamlaldin 7B

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  18. Good morning sir
    Rayhan 7b

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  19. Good morning mam I am Devansh 7-B

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