Chapter 1 - Whole Numbers - 1.7 Rounding Whole Numbers - 1.7 Exercises - Page 73: 36

Ten: 78,520 Hundred: 78,500 Thousand, 79,000

To round to the nearest ten, we look at the ones place, which is 9 so we round up to the next biggest ten: 78,520. To round to the nearest hundred we look at the tens place, which is 2 so we round down to the same hundred: 78,500. To round to the nearest thousand we look at the hundreds place, which is 5 so we round up to the next biggest thousand: 79,000.