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Subtract a One-Digit Number from a Two-Digit Number - within 20
Let's find the difference of 17 and 9.
To find the difference, we need to count back from the greater number.
17 – 9 = ?
Let’s start from 17 and count back 9:
17, 16, 15, 14, 13, 12, 11, 10, 9, 8.
Now,
17 – 9 = 8
So, the difference of 17 and 9 is 8.
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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.