If the two sides of a subtraction sentence are equal, then the sentence is said to be true.
For example: Consider the subtraction sentence.
18 – 6 = 12
Let's check if the given subtraction sentence is true.
Find the difference of 18 and 6.
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.