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\ 14-Nov-2025 Bharat Arora Proof-7 Reader’s Sign _______________________ Date __________
Addition with regrouping Tens and Ones
Example 4. Add 57 and 56.
Solution.
Step 1. Add the ones and regroup. Step 2. Add the tens and regroup.
H T O H T O
1 1
5 7 5 7
+ 5 6 + 5 6
3 1 1 3
7 + 6 = 13 ones = 1 ten + 3 ones 1 + 5 + 5 = 11 tens = 1 hundred + 1 ten
So, 57 + 56 = 113.
Exercise 2G
1. Add the following.
a. H T O b. H T O c. H T O d. H T O
3 0 5 0 6 0 8 0
+ 8 0 + 5 0 + 7 0 + 4 0
e. H T O f. H T O g. H T O h. H T O
8 9 4 0 8 0 7 9
+ 6 0 + 7 2 + 8 4 + 7 0
44 Mathematics 2
