Mind Maps

Q) Add 5 + 3 = ?

Q) Add 4 + 1 = ?

Q) Add 3 + 7 = ?

Q) Add 2 + 6 = ?

Q) Add 1 + 8 = ?

Q) Count the total number of spoons and write in number name Q) Count the total number of vessels Q) Simplify and write the total number of combinations for 5 are? Q) Add 1 + 5+ 3 =?

Q) Add 2 +7 + 1 = ?

Q) Write the number name of the digit 586

Q) There are 6 spoons in the holder and 2 spoons on the table.Count the totral number of spoons all together?

Q) Ravi has 3 apples.tina has 5 apples.Tom has 1 apple.Count the total number of apples?

Q) There are 3 glasses full of water and 7 empty glasses.Count the total number of glasses?

Q) Bheem has 5 Chocolates and his brother gave him 4 chocolates.Count the total number of chocolates?

Q) Add the following 6 + 3 + 1 = ?,and write in number name

4+5=9;
3+5=8.

#### How many students are there in Rainbow school? The table given below provides information about the number of students in classes I to V in Rainbow school. Find out how many students are there in each class.

 Class I Class II Class III Class IV Class V Total Boys 13 14 12 16 15 70 Girls 14 12 16 14 12 68 Total

Rani saw the table and said that in class I there are -

In class I, 13 boys and 14 girls.
I can break 13 into 10 + 3 and 14 into 10 + 4
Then it is easy.I add 10 + 10 and 3 + 4
So 13 + 14
= 10 + 3 + 10 + 4
= 20 + 3 + 4
= 20 + 7
= 27
See if you can do the same for class II, III, IV and V students.
Class II rarr 14 + 12
= 10 + 4 + 10 + 2
= 20 + 4 + 2
= 20 + 6
= 26
Class III rarr 12 + 16
= 10 + 2 + 10 + 6
= 20 + 2 + 6
= 20 + 8
= 28
Class IV rarr 16 + 14
= 10 + 6 + 10 + 4
= 20 + 6 + 4
= 20 + 10
= 30
Class V rarr 15 + 12
= 10 + 5 + 10 + 2
= 20 + 5 + 2
= 20 + 8
= 28
Total number of students in Rainbow school are 138.

Examples
1. 32 + 36 = 68
2. 65 + 47 = 112
3. 86 + 75 = 161
4. 65 + 74 = 139
5. 74 + 46 = 120
6. 73 + 62 = 135
7. 26 + 64 = 90
Carefully look at the table again.
The total number of boys in Ravindra Bharath school is 70 and the total number of girls is 68. What is total number of students in Ravindra Bharathi school? Let us add the number of boys and girls.?

+ H T O
7 0
6 8
1 3 8

Tens
10 10 10 10 10 10 10
10 10 10 10 10 10
ones
1 1 1 1 1 1 1 1

+ H T O Total
10 10 10 10 10 10 10
10 10 10 10 10 10 1 1 1 1 1 1 1 1
20 20 20 20 20 20 10 1 1 1 1 1 1 1 1 =138

#### How many students are there in ZPH school? There are 132 boys and 122 girls in Thimmapur school. What is the total number of students in the school?Let us find the total number of students in the school. Add 132 and 122.

+ H T O
1 3 2
1 2 2
2 5 4

Example:A factory produces 214 lights in the first week and 124 lights in the second week. How many fans did the factory produce in the two weeks?

+ H T O
2 1 4
1 2 4
3 3 8

How many bricks?
A kitchen is being constructed in Thimmapur school. 475 bricks are available.
The mason brings 220 more bricks and uses them to construct the kitchen.
A total of how many bricks are used to construct the kitchen?
Think! Is 475 + 220 more than 600 or less than 600?
Number of bricks in the school             4 7 5
Number of bricks the mason brings    +2 2 0
------------
Total number of bricks                       6 9 5
------------
Example: 1 John and Gopi are playing with pebbles. John has 163 pebbles. He wins 125 more pebbles. How many pebbles does John have now?
John's pebbles initially                    1 6 3
Pebbles won by John                    +1 2 5
------------
John's pebbles bricks                    2 8 8
------------

How many chocolates do you need?
It was decided to distribute a chocolate to each person on Independence Day in play school. There were 267 students and 12 teachers. Two girls Latha and Neha calculated the number of chocolates required for distribution, as given below-
Latha has
2 6 7
+ 1 2
-----------
3 8 7
-----------
Neha has
2 6 7
+ 1 2
-----------
2 7 9
-----------

   Neha added correctly.
2 hundreds + 6 tens + 7 ones
1 tens + 2 Ones
------------------------------
2 hundreds + 7 tens + 9 ones
-------------------------------
From the above solution it is clearly stated that Neha added in the correct order of addends i.e. ones place value in the ones place and tens place value in the tens place.


Excercise

1 A teacher keeps a note of the number of story books and story cards read by boys and girls in the school. This is what she found:

 Students Story books Story cards Girls 145 254 Boys 66 120

2Vijaya's age is 22 years.Laxmi's age is 25 years more than Vijaya's age.Whats is Laxmi's age?