Rounding and Estimating

On a long haul flight an aeroplane flew 3123 miles in 9.6 hours.

Work out an estimate of how many miles it flew each hour.

• 3000

• 30

• 300

Estimate the answer to

54.6 x 2.91

• 1500

• 150

• 15

Martyn rode 287 kilometres in 11 days.

Using estimation roughly how many kilometres did he ride each day?

• 30

• 300

• 3

Estimate the answer to

2.1 x 9.7 x 3.7

• 80

• 800

• 0.8

A square has edges of length 2.14cm.

What is an estimate of the area?

• $4cm^2$

• $40cm^2$

• $0.4cm^2$

Estimate the answer to

935 x 29

• 2700

• 27000

• 27

At a theatre they sold 73 cups of coffee during the interval at 68p a cup.

Estimate the amount of money they took

• £490

• £4.90

• £49

Estimate the answer to

34.87 x 20.27

• 60

• 6

• 600

At Dave’s ice cream stall he sold 223 ice creams at 67p each.

Estimate how much his takings were that day.

• £140

• £1400

• £14000

Estimate the answer to

3.14 x 7.92

• 240

• 24

• 0.24