Free maths practice app

Rounding and estimation practice app

A quick classroom-ready app for rounding numbers, estimating sums, estimating money totals and choosing the place students should round to.

Round to 10

Students practise rounding smaller and larger numbers to the nearest ten.

Round to 100 or 1000

Change the place to practise nearest hundred or nearest thousand questions.

Estimate sums

Students round each term first, then add the rounded numbers to make an estimate.

Money totals

Money questions use dollar totals and can round prices to the nearest $1 or $10.

What students practise

The app is built for short, focused rounding and estimation practice where students choose sensible approximate values before calculating.

  • rounding numbers to the nearest 10
  • rounding numbers to the nearest 100
  • rounding numbers to the nearest 1000
  • estimating sums after rounding each number
  • estimating money totals after rounding prices

How it fits a lesson

Use it after modelling the rounding place, during rotations, as a number-sense warm-up, or as follow-up practice when students need more examples.

  • start with nearest 10 when students are learning the rounding rule
  • move to nearest 100 or 1000 when place-value thinking is secure
  • use estimate sums once students can round each term first
  • use money totals when students are ready to connect estimation to everyday amounts

Why it helps

Rounding and estimation are useful when students know which place matters and can decide whether an answer is reasonable before or after calculating.

  • connects rounding rules with place value
  • supports approximate calculation rather than exact-only thinking
  • builds a habit of checking whether an answer makes sense

Frequently Asked Questions

Is the rounding app free?

Yes. Students, teachers and families can open the rounding and estimation app in a browser for free.

What rounding places are included?

The app supports rounding to the nearest 10, 100 and 1000, plus money rounding to the nearest $1 or $10.

Does it include estimation?

Yes. Students can practise estimating sums and estimating money totals after rounding first.

Does it replace explicit place-value teaching?

No. It is designed for practice after students have seen how to identify the rounding place and use the next digit to decide what happens.