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Adding A 2-digit And A 1-digit numbers

Example 1: Sumona has 24 hair clips. She got 5 more. How many hair clips does
Sumona have now?

Solution: To know the total number of hair clips, we need to add 24 and 5.

Step 1. Add the ones first. Step 2. Add the tens next.

tens Ones tens Ones

2 4 2 4

+ 5 + 5
9 + 2 9

Thus, Sumona has 29 hair clips now.
Example 2: Add 50 and 4. Knowledge Desk

Solution: Eleven plus Two is an

Step 1. Add the ones. Step 2. Add the tens. anagram of twelve eLeveN
PLus
tens Ones tens Ones plus One which twO
is pretty fitting as =
5 0 5 0 tweLve
the answer to both
PLus
+ 4 + 4 quotations is 13. Also, ONe

4 5 4 there are 13 letters
Thus, 50 + 4 = 54 in both eleven plus two
and twelve plus one.

Get it right!

Add 35 and 3.

tens Ones tens Ones

3 5 3 5

+ 3 + 3

6 5  3 8 3

Quick Check
Is the sum of two 1-digit numbers always a 1-digit number?

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