Adding Two-Digit Numbers
Master adding two-digit numbers with carrying using column addition.
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Adding Two-Digit Numbers
Let's learn how to add two-digit numbers step by step. Consider the example:
Note: We need to add $$27 + 35$$ and show each step clearly.
Step 1: Add the Ones Column
First, add the digits in the ones (right) column:
$$7 + 5 = 12$$
Since $$12$$ is greater than 9, we write down $$2$$ and carry over $$1$$ to the tens column.
Step 2: Add the Tens Column
Now add the digits in the tens (left) column, plus the carry:
$$2 + 3 + 1 = 6$$
Final Answer
Combining both results, we get:
| Step | Calculation | Result |
|---|---|---|
| Ones column | $$7 + 5$$ | $$12$$ (write 2, carry 1) |
| Tens column | $$2 + 3 + 1$$ | $$6$$ |
| Final | Total | $$62$$ |
Try It Yourself
Now try adding $$48 + 36$$:
Click to reveal the solution
Step 1: Ones: $$8 + 6 = 14$$ (write 4, carry 1)
Step 2: Tens: $$4 + 3 + 1 = 8$$
Answer: $$84$$
Tip: Always add from right to left (ones first, then tens). This makes carrying much easier!
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