Test: Rounding numbers - Year 7 MCQ

The first significant digit of 3.98 is 3, followed by 9 (≥5), so it rounds up to 4.

To round 448 to the nearest 100, the hundreds digit is 4, and the tens digit is 4 (<5), so it remains 400.

The first significant figure of 6,691 is 6, followed by 6 (≥5), so it rounds up to 7. With 1 significant figure, it becomes 7,000

To round 3.114 to 1 decimal place, the first decimal digit is 1, and the second is 1 (<5), so it remains 3.1.

To round 450 to the nearest 100, it is exactly halfway between 400 and 500. Standard rounding rules dictate rounding up, so it becomes 500.

To round 9.825 to 2 decimal places, the second decimal digit is 2, and the third is 5 (halfway), so it rounds up to 9.83.

To round 7,891 to the nearest 1,000, the hundreds digit is 8, and the tens digit is 9 (≥5), so it rounds up to 8,000.

The first significant figure of 277 is 2, followed by 7 (≥5), so it rounds up to 3, becoming 300.

448 is 2 less than 450 and 8 more than 440, so it rounds to 450.

To round 1.784 to 2 decimal places, the second decimal digit is 8, and the third is 4 (< 5), so it remains 1.78.