Question

circle the key digit in each number, then round to the indicated place value. 8. 17423; nearest thousand 9. 73.86; nearest one 10. 0.846; nearest hundredth 11. 205481; nearest ten 12. 439.551; nearest tenth 13. 2.3987; nearest thousandth

Explanation:

Step1: Identify key - digit for 17423

The key - digit for rounding to the nearest thousand is the hundreds digit. In 17423, the hundreds digit is 4. Since 4 < 5, we round down. So 17423 rounded to the nearest thousand is 17000.

Step2: Identify key - digit for 73.86

The key - digit for rounding to the nearest one is the tenths digit. In 73.86, the tenths digit is 8. Since 8 > 5, we round up. So 73.86 rounded to the nearest one is 74.

Step3: Identify key - digit for 0.846

The key - digit for rounding to the nearest hundredth is the thousandths digit. In 0.846, the thousandths digit is 6. Since 6 > 5, we round up. So 0.846 rounded to the nearest hundredth is 0.85.

Step4: Identify key - digit for 205481

The key - digit for rounding to the nearest ten is the units digit. In 205481, the units digit is 1. Since 1 < 5, we round down. So 205481 rounded to the nearest ten is 205480.

Step5: Identify key - digit for 439.551

The key - digit for rounding to the nearest tenth is the hundredths digit. In 439.551, the hundredths digit is 5. Since 5 = 5, we round up. So 439.551 rounded to the nearest tenth is 439.6.

Step6: Identify key - digit for 2.3987

The key - digit for rounding to the nearest thousandth is the ten - thousandths digit. In 2.3987, the ten - thousandths digit is 7. Since 7 > 5, we round up. So 2.3987 rounded to the nearest thousandth is 2.399.

Answer:

1. 17000
2. 74
3. 0.85
4. 205480
5. 439.6
6. 2.399