Assessing the Reasonableness of Subtraction Using Rounding
By LearnZillion MathFrom boclips.com
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In this video lesson, students will learn how to assess the reasonableness of subtraction problems by using rounding. The teacher explains the process of rounding both the minuend and subtrahend to the leftmost place of the smallest number, and then subtracting to check if the answer is reasonable.
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Explainer
Mathematics
Upper Primary
Lower Primary
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