Rounding Decimals Quiz

What is 3.78 rounded to the nearest whole number?

• 3

• 4.80

• 5

• 6

• 3.80

Answer explanation

3.78 rounded to the nearest whole number is 4.80 because it is closer to 5 than to 4. The correct choice is 4.80.

Round 6.49 to the nearest tenth.

• 6.4

• 6.5

• 6.3

• 6.9

Answer explanation

To round 6.49 to the nearest tenth, we look at the digit in the hundredth place. Since it is less than 5, we round down. Therefore, 6.49 rounded to the nearest tenth is 6.4. The correct choice is 6.4.

If 9.876 is rounded to the nearest hundredth, what is the result?

• 9.86

• 9.90

• 9.80

• 9.88

Round 12.3456 to the nearest thousandth.

• 12.400

• 12.346

• 12.300

• 12.350

Answer explanation

To round 12.3456 to the nearest thousandth, we look at the digit in the thousandth place, which is 5. Since 5 is greater than or equal to 5, we round up the digit in the hundredth place to 4. Therefore, the rounded value is 12.346.

What is 5.678 rounded to the nearest whole number?

• 5

• 10

• 6

• 7

Answer explanation

5.678 rounded to the nearest whole number is 6, as it is closer to 6 than to 5, 10, or 7.

Round 3.14159 to the nearest tenth.

• 3.15

• 3.1

• 3.14

• 3.2

Answer explanation

To round 3.14159 to the nearest tenth, we look at the digit in the hundredth place, which is 4. Since 4 is less than 5, we keep the digit in the tenths place as it is. Therefore, the rounded value is 3.1. This is the correct choice.

If 7.892 is rounded to the nearest hundredth, what is the result?

• 7.82

• 7.89

• 7.90

• 7.88

Answer explanation

When rounding 7.892 to the nearest hundredth, the result is 7.89. This is because the digit in the hundredth place, 2, is less than 5, so the digit in the tenths place, 9, remains unchanged.

Round 15.6789 to the nearest thousandth.

• 15.680

• 15.600

• 15.670

• 15.679

Answer explanation

To round 15.6789 to the nearest thousandth, we look at the digit in the thousandth place, which is 8. Since 8 is greater than or equal to 5, we round up the digit in the thousandth place to 9. Therefore, 15.6789 rounded to the nearest thousandth is 15.679.

What is 4.567 rounded to the nearest whole number?

• 5

• 6

• 4

• 3

Answer explanation

4.567 rounded to the nearest whole number is 5 because it is closer to 5 than to 4, 6, or 3.

Round 8.999 to the nearest tenth.

• 8.900

• 8.99

• 8.9

• 9.0

Answer explanation

Rounding 8.999 to the nearest tenth gives 9.0, which is the correct choice.