## Thinking Mathematically (6th Edition)

Published by Pearson

# Chapter 1 - Problem Solving and Critical Thinking - 1.2 Estimation, Graphs, and Mathematical Models - Exercise Set 1.2 - Page 28: 54

#### Answer

Value after rounding off to the nearest thousand is = 219000 Value after rounding off to ten thousandth digit is = 220000

#### Work Step by Step

218543 For nearest thousand The digit in the thousandth place is 8. If the digit next to the thousandth place is 5 or more than 5 then thousandth place digit is increased by 1, and if not then it remains the same. In this case the digit next to thousandth place is 5, therefore thousandth place digit becomes 9. Value after rounding off to the nearest thousand is = 219000 For nearest ten thousand The digit on ten thousandth place is 1. The digit next to that is 8 which is more than 5, therefore ten thousandth place digit becomes 2. Value after rounding off to ten thousandth digit is = 220000

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