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3. Find the sum of the following. One has been done for you.
(a) T O (b) T O (c) T O (d) T O

3 2 6 4 5 2 2 6
+ 1 4 + 1 5 + 3 3 + 4 0

4 6

ADDING THREE 2-DIGIT NUMBERS

David, Harsh and Vicky

participated in an interschool

cricket tournament.

David, the captain, scored 25
runs, Vicky scored 22 runs

while Harsh scored 12 runs

in the match. What was their

total score?

David calculates the runs they scored in the match as follows. T O
2 5
Step 1. He writes the numbers in tens and ones columns, one below 2 2

the other. + 1 2

Step 2. Then, he adds the ones first. Step 3. Next, he adds the tens.

T O T O
2 5 2 5

2 2 2 2
+ 1 2 + 1 2

9 5 9

Thus, they scored 59 runs.

Let us look at some more examples.
(a) T O (b) T O (c) T O (d) T O

4 2 1 5 3 2 2 4
1 3 2 1 4 1 1 0
+ 2 1 + 3 2 + 1 6 + 5 3

7 6 6 8 8 9 8 7

38 Mathematics-2