Explanation Given Information: The multiplication of: 378 × 72 _ . Formula used: The procedure used to multiply two whole numbers is: Step 1: Find the estimated product of the rounded numbers with each number rounded to its first digit. Step 2: Use the calculator to calculate the exact product of the numbers. Step 3: Compare the estimated and exact product to determine if the exact product is reasonable. Step 4: Multiply the numbers manually to verify the product. Calculation: Consider the multiplication of: 378 × 72 _ Now, round each number to its first digit. 378 → 400 × 72 _ → × 70 _ So, the estimated product is calculated as, 400 × 70 _ 28 , 000 Thus, the estimated product is obtained as 28 , 000 . Now, find the exact product of the numbers by calculator. Enter the provided numbers into the calculator. So, the exact product is obtained as, 378 × 72 = ⇒ 27 , 216 The obtained estimated product and the exact product are not reasonably close. Verify the exact product by multiplying the numbers manually

11th Edition

ISBN: 9780134496436

Author: Cheryl Cleaves, Margie Hobbs, Jeffrey Noble

Publisher: PEARSON

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Chapter 1, Problem 63ES

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To calculate: The estimated product with each number rounded to the first digit and then find the exact product of:

378 ×72_

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Chapter 1, Problem 62ES

Chapter 1, Problem 64ES

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The estimated product with each number rounded to the first digit and then find the exact product of: 378 × 72 _

Solution Summary: The author explains how to calculate the estimated and exact product of two whole numbers by multiplying the numbers manually.

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To calculate: The estimated product with each number rounded to the first digit and then find the exact product of:

378 ×72_

Want to see the full answer?

Chapter 1 Solutions

The estimated product with each number rounded to the first digit and then find the exact product of: 378 × 72 _

Solution Summary: The author explains how to calculate the estimated and exact product of two whole numbers by multiplying the numbers manually.

Videos

To calculate: The estimated product with each number rounded to the first digit and then find the exact product of: 378 ×72_

Want to see the full answer?

Chapter 1 Solutions

To calculate: The estimated product with each number rounded to the first digit and then find the exact product of:

378 ×72_