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\ 04-Oct-2025 Bharat arora Proof-9 Reader’s Sign _______________________ Date __________
Practice time 7b
Add the following.
1. Tens Ones 2. Tens Ones 3. Tens Ones 4. Tens Ones
3 0 3 0 7 0 3 0
+ 5 0 + 3 0 + 1 0 + 2 0
5. Tens Ones 6. Tens Ones 7. Tens Ones 8. Tens Ones
3 0 5 0 6 0 7 0
+ 4 0 + 1 0 + 3 0 + 2 0
Adding 2-digit numbers
example 1: In a store room, there are
36 boxes of cornflakes and 22 boxes
of oats. How many boxes of cereal are
there?
Solution: To know the total number of
cereal boxes, we need to add 36 and
22.
Step 1. Arrange the numbers Step 2. Add the ones Step 3. Now, add the
one below the other first. tens.
keeping in mind the 6 ones + 2 ones = 8 ones 3 tens + 2 tens = 5 tens
place value of the Write 8 in the ones Write 5 in the tens
digits. column. column.
Tens Ones Tens Ones Tens Ones
3 6 3 6 3 6
+ 2 2 + 2 2 + 2 2
8 5 8
Thus, there are 58 boxes in the store room.
106 Mathematics-1
