Round each number to the nearest ten

Explanation

We will find the digit in the tens column and the digit in the ones column.  To round to the nearest ten, the digit in the tens column is the rounding digit and the digit in the ones column is the test digit.

Solution

1. We find the rounding digit in the tens column, which is 6. Then we look at the test digit to the right of 6, which is the 1 in the ones column. Since 1 5, we round down by leaving the 6 unchanged and replacing the test digit with 0.  Thus 3,761 rounded to the nearest ten is 3760.
2. We find the rounding digit in the tens column, which is 8. Then we look at the test digit to the right of 8, which is the 7 in the ones column. Because 7 is 5 or greater, we round up by adding 1 to 8 and replacing the test digit with 0.  Thus, 12,087 rounded to the nearest ten is 12,090.