Year 11 Review quiz

The following number has been rounded to 1 significant figure.

800

Find the lower bound...

• 850

• 750

• 849

• 749

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 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 sides of the rectangle are measured to the nearest cm. What is the largest area of the rectangle?

• 15 cm²

• 19.3 cm

• 19.25 cm²

• 11.25 cm²

The length and width of a field have been measured as 78m and 35m to the nearest metre. Find the upper bound of fencing needed to surround the field.

• 27

• 228

• 226.5

• 228.5

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

260m

Find the lower bound...

• 262.5m

• 257.5m

• 260.6m

• 259.5

A metal rod has a length of 2 cm to the nearest cm.

What is the greatest possible length of the rod?

A cuboid measures 2 x 11 x 9 m measured to the nearest metre.

What is the least possible volume of the cuboid?

• 198.5

• 382.375

• 197.5

• 223.125

• 1.079

• 1.0799

• 1.08

• 1.0795