Chapter 1 - Whole Numbers - 1.2 Adding Whole Numbers - 1.2 Exercises - Page 20: 82

There were $4886$ tornadoes in this 7-year period.

The problem asks for a total. A total is the answer to an addition problem. Therefore, we will add the seven numbers (887, 223, 465, 683, 597, 214, 1817). $887 + 223 + 465 + 683 + 597 + 214 + 1817$ Start at the right of each number and add the ones digits $7 + 3 + 5 + 3 + 7 + 4 + 7 = 36$ ones Regroup the $36$ ones as $3$ tens and $6$ ones Write the $6$ ones in the ones column. Write the $3$ tens in the tens column Add the tens column next including the regrouped $3$ $3 + 8 + 2 + 6 + 8 + 9 + 1 + 1 = 38$ tens Regroup the $38$ tens as $3$ hundreds and $8$ tens Write the $8$ tens in the tens column. Write the $3$ hundreds in the hundreds column Add the hundreds column next including the regrouped $3$ $3 + 8 + 2 + 4 + 6 + 5 + 2 + 8 = 38$ hundreds Regroup the $38$ hundreds as $3$ thousands and $8$ hundreds Write the $8$ hundreds in the hundreds column Write the $3$ thousands in the thousands column. Add the thousands column next including the regrouped $3$ $3 + 1 = 4$ thousands Write the $4$ thousands in the thousands column. $4886$ The sum of the seven numbers is $4886$ $4886$ tornadoes.