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Number know-how
por
Examines how scientists use number sense to find answers, explains how benchmarks are helpful, describes situations in which mental math can help, and shows how to judge the reasonableness of answers to everyday problems involving math.
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Examines how scientists use number sense to find answers, explains how benchmarks are helpful, describes situations in which mental math can help, and shows how to judge the reasonableness of answers to everyday problems involving math.
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