Page 45 - Math Genius C2

E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_02
\ 26-Sep-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

example: Add 36 and 18.

Solution: Arrange the numbers one below the other according to the place values
of the digits. Then add.
Step 1. Add the ones and regroup. Step 2. Add the tens.

6 + 8 = 14 ones = 1 ten 4 ones 1 + 3 + 1 = 5 tens

Write 4 in the ones column and carry over Write 5 in the tens column.
1 to the tens column.

t O

t O 1

1 3 6
3 6 + 1 8
+ 1 8 5 4

4

Thus, 36 + 18 = 54.

Get it right!
t O Be Aware

t O 1 Don’t miss regrouping the
5 9 5 9 ones into tens and ones
+ 3 6 + 3 6 when there are more than
9 ones.
8 15 7 9 5 3

Think Tank Critical Thinking
In the following addition tree, each number is the sum of the two numbers just below
it. Find the missing number for each blank.
1. 2. 3.
21

12 9 12

2 7 5 5 4 2 3 8 4

Mathematics-2 43