Adding a 1-Digit Number to a 2-Digit Number (by counting on)
We can find the sum of a given one-digit and a two-digit number by counting on.
For example: Let's find the sum of 15 and 4.
In order to find the sum, we need to count up.
15 + 4 = ?
Let’s start counting from 15 and count up 4:
15, 16, 17, 18, 19
Now,
15 + 4 = 19
So, the sum of the given numbers is 19.
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Help
The correct answer is
Remember :
The smallest number is the one that comes first while counting.
Solution :
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21,27,23
21 is the smallest number.