topic badge
iGCSE (2021 Edition)

1.01 Estimation

Interactive practice questions

Estimate $99+61$99+61.

a

Round both numbers to the nearest $10$10.

$\editable{}+\editable{}$+

b

Calculate the estimate.

Easy
< 1min

Estimate $63-22$6322.

Easy
< 1min

Estimate $898-132$898132.

Easy
< 1min

Estimate $765+171$765+171.

Easy
< 1min
Sign up to access Practice Questions
Get full access to our content with a Mathspace account

Outcomes

0580C1.9A

Make estimates of numbers, quantities and lengths and round off answers to reasonable accuracy in the context of a given problem.

0580E1.9A

Make estimates of numbers, quantities and lengths and round off answers to reasonable accuracy in the context of a given problem.

What is Mathspace

About Mathspace