Chapter 1 - Whole Numbers - 1.7 Rounding Whole Numbers - 1.7 Exercises - Page 73: 33

Ten: 19,540 Hundred: 19,500 Thousand, 20,000

To round to the nearest ten, we look at the ones place, which is 9 so we round up to the next biggest ten: 19,540. To round to the nearest hundred we look at the tens place, which is 4 so we round down to the same hundred: 19,500. To round to the nearest thousand we look at the hundreds place, which is 5 so we round up to the next biggest thousand: 20,000.