# Limits Of Accuracy

17 Questions | Total Attempts: 33

Settings

Working out the LOWER and UPPER bounds of values. Solving problems

• 1.
Round 45.678 to 3 significant figures.
• 2.
Round 19.96 to 2 sig.fig.
• 3.
Round 0.3213 to 2 decimal places
• 4.
Round 45.563 to 2 decimal places.
• 5.
A length L has been rounded to 5cm to the nearest cm. Complete with the lower and upper bounds  [Blank] ≤ L < [Blank]
• 6.
During a car journey, my average speed, s, was 40mph to the nearest 10mph Complete the "error interval" (That means find the lower and the upper bounds) [Blank] ≤ s < [Blank]
• 7.
The length, L , of the journey to visit my friends is 75km rounded to the nearest 5km. Complete the error interval (lower bound and upper bound) [Blank] ≤ L < [Blank]
• 8.
What is the error interval of the length L, when L is 7cm rounded to 1 sig.fig.?
• A.

6.9 cm ≤ L < 7.1 cm

• B.

6.5 cm ≤ L < 7.5 cm

• C.

6.99 cm ≤ L < 7.01 cm

• D.

6.95 cm ≤ L < 7.05 cm

• 9.
The length L has been rounded to 9.8 m correct to 1 decimal places.What is the error interval of the length L?
• A.

9.7 m ≤ L < 9.9 m

• B.

9.75 m ≤ L < 9.85 m

• C.

9.79 m ≤ L < 9.81 m

• D.

9 m ≤ L < 10 m

• 10.
A weight m is 100kg correct to 2 sig. fig.​What is the error interval of this weight?
• A.

99.5 kg ≤ m < 100.5 kg

• B.

90 kg ≤ m < 110 kg

• C.

99 kg ≤ m < 101 kg

• D.

95 kg ≤ m < 105 kg

• 11.
A weight m is 100kg correct to 3 sig. fig.​What is the error interval of this weight?
• A.

99.5 kg ≤ m < 100.5 kg

• B.

90 kg ≤ m < 110 kg

• C.

99 kg ≤ m < 101 kg

• D.

95 kg ≤ m < 105 kg

• 12.
A weight m is 100kg correct to 1 sig. fig.​What is the error interval of this weight?
• A.

50 kg ≤ m < 150 kg

• B.

0 kg ≤ m < 100 kg

• C.

90 kg ≤ m < 110 kg

• D.

95 kg ≤ m < 105 kg

• 13.
A parking space is 4.8 metres long to the nearest tenth of a metre.A car is 4.5 metres long to the nearest  half a metre.Which of the following statements is definitely true?
• A.

The space is big enough

• B.

The space is not big enough

• C.

It is impossible to tel whether or not the space is big enough

• 14.
Cans have a mass of 250 grams to the nearest 10 grams. What is the minimum mass of 10 of these cans?        [Blank] grams
• 15.
A rectangle measures 3cm by 8cm both correct to the nearest cm. What is the upper bound of the AREA of this rectangle?         [Blank]  cm²
• 16.
A rectangular garden has sides 8m and 5m, measured to the nearest metre. What is the upper bound of the area?    [Blank] m²
• 17.
A rectangular garden has sides 8m and 5m, measured to the nearest metre. What is the lower bound of the perimeter?     [Blank] m