3rd Grade Rounding Practice Quiz

47 is closer to 50 than it is to 40 because the difference is 3 compared to 7. When rounding to the nearest ten, numbers with a ones digit of 5 or more round up.

The ones digit in 52 is 2, which is less than 5. This means the number rounds down to 50 when rounding to the nearest ten.

Since the ones digit is exactly 5, the standard rounding rule tells us to round up. Therefore, 25 becomes 30 when rounded to the nearest ten.

The ones digit in 68 is 8, which is greater than 5, so the number rounds up to 70. This follows the basic rule of rounding.

In 33, the ones digit is 3, which is less than 5. This means the number rounds down to 30, making it the closest multiple of ten.

The ones digit in 146 is 6, which leads to rounding up. Therefore, 146 rounds to 150 when rounding to the nearest ten.

When rounding 357 to the nearest hundred, the tens digit is 5 or more, causing the number to round up. Thus, 357 rounds to 400.

The ones digit in 289 is 9, which means the number rounds up when rounding to the nearest ten. Therefore, 289 becomes 290.

For 611, the last two digits form 11, which is less than 50. This means the number rounds down to 600 when rounding to the nearest hundred.

Since the ones digit in 74 is 4, which is less than 5, the number rounds down to 70. This is the correct rounding for tens.

In 135, the ones digit is 5, which means the number rounds up according to standard rounding rules. Thus, 135 becomes 140.

492 is much closer to 500 than to 400 when rounding to the nearest hundred. The combined tens and ones digits push the value upward.

In 825, the last two digits are 25, which is less than 50. Therefore, when rounding to the nearest hundred, the number rounds down to 800.

The ones digit in 764 is 4, which is below 5, so the number rounds down to 760. This is a straightforward application of the rounding rule.

For 918, the digits after the hundred place form 18, which is less than 50. Hence, the number rounds down to 900 when rounding to the nearest hundred.

First, 453 rounds to 450 because the ones digit is 3. Then, when 450 is rounded to the nearest hundred, it rounds up to 500 as it meets the halfway rule.

Since the ones digit of 129 is 9, the number rounds up to 130. Rounding to the nearest ten simplifies the number, making 130 the best estimate.

299 is only 1 less than 300 and is much closer to 300 than to 200. Thus, when rounding to the nearest hundred, 299 rounds to 300.

The ones digit in 836 is 6, which means that the number rounds up when rounding to the nearest ten. Therefore, 836 rounds to 840.

For 432, the tens and ones digits form 32, which is less than 50. This means that when rounding to the nearest hundred, the number rounds down to 400.