Number (mult/div)

UK Primary (3-6)

Use rounding to estimate solutions

Let’s estimate the solution to $24\times24$24×24 by rounding the digits first.

a

Rewrite the calculation but use rounded numbers to the nearest $10$10.

$\editable{}\times\editable{}$×

b

Calculate $20\times20$20×20.

c

Is $400$400 going to be larger or smaller than the actual result of $24\times24$24×24?

Smaller

A

Larger

B

Smaller

A

Larger

B

Easy

Approx a minute

Sign up to try all questions