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Wednesday, March 29, 2023

The operation to search out the entire of various values is

After we sum up two or extra quantities we use addition.

● The signal of addition is +

● Add numbers in any order, we get the identical sum. e.g.

5 + 6 + 7 = 18

6 + 7 + 5 = 18

7 + 5 + 6 = 18

● Zero added to any quantity offers the identical quantity. e.g.

8 + 0 = 8

0 + 10 = 10

32 + 0 = 32

0 + 88 = 88

● Add 1 to a quantity, we get the following quantity. e.g.

11 + 1 = 12

40 + 1 = 41

1 + 76 = 77

1 + 99 = 100

5 + 0 =

0 + 25 =

15 + 1 =

68 + 1 =

22 + 8 + 5 =

5 + 8 + 22 =

8 + 5 + 22 =

5 + 4 + 3 + 2 =

6 + 7 + 5 + 0 =

9 + 1 + 4 + 7 =

(i)

 37 30 + 7 30 + 20 50 + + + + 59 22 20 + 2 7 + 2 9

(ii)

245          +         652

200 + 40 +    +     600 + 50 + 2

200 + 600 + 40 + 50 + 5 + 2

800      +     90     +    7

897

Tell us some information about addition which is able to assist us to be taught so as to add 4-digit and 5-digit numbers.

1. Addition of small numbers may be executed horizontally.

Instance: 6 + 2 + 3 = 11

2. Massive numbers are added in vertical columns (written below the place worth chart).

Instance:

Th     H     T     O

7     2     5     8

1     3     6     2

+       1     4     2     6

1       0     0     4     6

3. A zero added to a quantity doesn’t change the place worth
of the quantity.

H     T     O

3     2     5

+                   0

3     2     5

4. The quantity or values being added are referred to as addends and
the reply is known as the sum.

5. 1 added to a quantity offers the successor of the quantity as
the sum.

6. To discover a lacking addend in an addition sum, the given
addend or the sum of all of the given addends is subtracted from the given sum.

Workings:

7. Altering the order of the addend in an addition sum does

Instance: (i) 45 + 26 = 26 + 45 = 71

(ii) 3 + 2 + 6 = 6 + 2 + 3 = 11

8. Whereas including greater than two numbers, we will group any two numbers
first. It doesn’t change the sum.

Instance: 7 + (9 + 3) = 7 + 12 = 19

or

(7 + 3) + 9 = 10 + 9 =
19

This reality helps us to group any two addends to make addition
straightforward.

Instance:

= (95 + 5) + 23

= 100 + 23

= 123

Let
us have a fast evaluate of what we now have learnt about addition of 3- digit quantity
within the earlier class.

So as to add 2- digit numbers, the numbers are
written one beneath the others. The tens and ones digits ought to seem are beneath
the opposite.

1.
Remedy the next sums and match them with the right reply.

 a. 20 + 5                             b. 13 + 8    c. 17 + 7                                d. 12 + 1     e. 14 + 6    f. 9 + 9 1. 20 2. 18 3. 21 4. 24 5. 13 6. 25

1. a. → 6

b. → 3

c. → 4

d. → 5

e. → 1

f. → 2

2. Add the variety of the center circle with the quantity
given within the internal circle. Write the sum within the outer circle:

(i)

(ii)

2. (i)

(ii)

3. Fill within the lacking numbers:

3.

(i) 34 + 3 = _____

(ii) 53 + 12  = _____

(iii) 17 + 8  = _____

(iv) 46 + 18  = _____

(v) 60 + 11  = _____

(vi) 82 + 6  = _____

(vii) 72 + 22  = _____

(viii) 21 + 5  = _____

4. (i) 37

(ii) 65

(iii) 25

(iv) 64

(v) 671

(vi) 88

(vii) 94

(viii) 26

5. Write ‘T’ for True and ‘F’ for False
Assertion:

(i) The sum
is at all times larger than the numbers being added.

(ii) When
we alter the order of quantity whereas including the sum does change.

(iii) The
sum of zero and any quantity is the quantity earlier than it.

(iv) When
you add 1 to a quantity the reply is the quantity after it.

5. (i) T

(ii) F

(iii) F

(iv) T

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