Error Intervals

What is the upper bound and lower bound of 390 grams, measured to the nearest 10 grams?

• 395 and 385

• 390.5 and 389.5

• 400 and 300

• 400 and 350

The number 79 has been rounded to the nearest unit. Find its lower and upper bounds

• 78.5  ≤ 79  <79.5

• 78 ≤ 79 <80

• 78.4 ≤ 79 <79.4

The number 10 has been rounded to the nearest whole number. Find its lower and upper bounds

• 9 ≤ 10 < 10

• 9.5  ≤ 10  < 10.5

• 9 ≤ 10 < 11

The number 1000 has been rounded to the nearest 100. Find its lower and upper bounds

• 950  ≤ 1000  < 1050

• 950 ≤ 1000 < 1050.1

• 950 ≤ 1000 < 1051

The number 51.2 has been rounded to the nearest 1 decimal place. Find its lower and upper bound

• 51.1 ≤ 51.2 < 51.2

• 51.15  ≤ 51.2  < 51.25

• 51 ≤ 51 < 51

The following number has been rounded to the nearest 100...

800

Find the lower bound...

• 850

• 750

• 849

• 749

The following number has been rounded to 1 decimal place.

0.8

Find the lower bound...

• 0.85

• 0.75

• 0.849

• 0.749

The following number has been rounded to 2 decimal places.

0.08

Find the upper bound...

• 0.085

• 0.075

• 0.0849

• 0.0749

The following number has been rounded to the nearest metre.

200m

Find the upper bound...

• 200.5m

• 205m

• 250m

• 204.5m

The following number has been rounded to the nearest 5 metres.

125m

Find the upper bound...

• 125.5m

• 127.5m

• 122.5m

• 125.05m