Estimating 

This lesson covers:

  1. How to use estimation to get a rough answer to a question

Estimate 41 x 98

(Give your answer to 1 s.f.)

4000

0

/

1

Estimate 3.9 x 201

(Give your answer to 1 s.f.)

800

0

/

1

Estimate the value of the following expression:

(Give your answer to 1 s.f.)

301.149.2×31.2
5

0

/

1

Estimate the value of the following expression:

(Give your answer to 1 s.f.)

2.9603
200

0

/

1

Estimate the value of the following expression:

(Give your answer to 1 s.f.)

0.498+3.518197×10.34
500

0

/

1

Estimate the value of the following expression:

(Give your answer to 1 s.f.)

1.93.932
8

0

/

1

In a shop, oranges cost 29p each and apples cost 21p each. Estimate the total cost of 5 oranges and 7 apples.

(Give your answer in pounds and pence, to 2 s.f.)

2.90

£

£

0

/

1

In a shop, pairs of socks cost £8.95 each and T-shirts cost £11.95 each.

Estimate the total cost of 4 pairs of socks and 2 T-shirts.

(Give your answer to the nearest pound)

60

£

£

0

/

1

Jennifer organised a charity event. Each ticket for the event cost £19.98, and she sold 395 tickets.


Jennifer paid costs of £6,000 to host the event. She gave all the money left over to the charity.


Estimate the total amount of money Jennifer gave to the charity.

(Give your answer to 1 s.f.)

2000

£

£

0

/

1