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# Sara estimated 23 x 43 by using 20 x 40. Sam estimated 23 x 43 by using 25 x 40. Explain why Sam's method will give a closer estimate than Sara's method. Please explain what method of working out did

Sara estimated 23 x 43 by using 20 x 40. Sam estimated 23 x 43 by using 25 x 40. Explain why Sam's method will give a closer estimate than Sara's method. Please explain what method of working out did they use to find the answer