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Mental maths practice with addition and subtraction that grows with a child

Mental maths practice with addition and subtraction: a sum on the screen, type the answer, find out straight away whether it was right. A child who signs in practises automatically at its own practice level, from number bonds up to sums to a thousand; anyone who would rather choose can tick a few kinds of sum instead. The tool also works without an account. Free, no adverts.

How it works

  1. Type the answer

    There is an empty box under the sum. On a tablet or a phone the number pad opens on its own; press Enter or the button to hand in the answer.

  2. See straight away whether it was right

    The tool works the sum out itself and shows at once whether the answer was right or wrong. Then the next sum arrives, until the round of ten sums is done.

  3. Practise at your own practice level

    A child who signs in sees no settings, only one line: "Practice level 3 · Jumping to 100". Enough sums right, and quick enough, and the tool moves on by itself, from number bonds up to sums to a thousand.

  4. Or choose your own kind of sum

    The "Choose your own" button opens a short list of kinds of sum to tick: number bonds, up to ten, jumping to 100, and so on. Useful for the crossing-ten sums that still trip a child up, or for a teacher who wants the whole class practising one kind.

Why the first sums are number bonds, not addition

The first sums on this tool are not "3 + 4", but "8 = 5 + ?" and "6 + ? = 10": number bonds. A child who knows that eight is made of five and three can then work out what five and three make together.

After that come sums up to ten, then jumping in tens up to a hundred, crossing ten, and on to sums with round hundreds up to a thousand. Seven practice levels in total, and a child only climbs to the next one once it answers enough sums right, quickly enough.

That happens on its own, with no number that reads like a school report. A practice level says what a child can do fluently today, and is not a judgement of how good it is: this is a practice tool, not a test. If a child slips back for a while, the practice level moves back with it, with no red screen and no message.

Choosing your own sums, for the classroom board or for focused practice

Not every moment calls for a child's own practice level. A teacher who wants the whole class on crossing ten, or a child who wants another go at one awkward kind of sum, presses "Choose your own" and ticks the kinds the tool may ask.

That free practice still earns points, the same as an ordinary round, but it never changes the practice level: a child who deliberately ticks the easy sums cannot practise its way upward that way. Without an account the tool only works this way, as a plain sums trainer with no practice level of its own.

What happens to an answer

Every sum that is typed is kept against the child's account: right or wrong, and how long it took. That is how the tool knows which sums still take effort, so those come up a little more often than one that has long been quick.

That history belongs to the child. It disappears on its own after a year, the same as the other practice rounds on Reppilo, and a teacher never sees more than where a child stands on addition and subtraction.

Frequently asked questions

Do I need to make an account?

No, the tool also works without signing in. Without an account it is a plain sums trainer: no practice level that grows with the child, just ordinary addition and subtraction practice.

What happens when a child signs in?

A child signed in on a school account gets the tool at its own practice level. Instead of settings it sees one line with the name of the practice level and a small bar that fills as enough right, quick sums come in.

Can I choose which sums are asked?

Yes. The "Choose your own" button opens a short list of kinds of sum to tick, for everyone, with or without an account. For a child on its practice level, that round does not count towards the practice level.

Does it include times tables or division?

No. This tool only practises addition and subtraction. Reppilo has a separate times tables tool, with its own practice level.

Does it work on the classroom board for the whole class?

Yes. Without signing in it is a plain sums trainer a teacher can use to have the whole class practise together, on whichever kind of sum is set at the time.

Does it work on a touchscreen?

Yes. The answer box opens the number pad on a tablet or a phone, so a child never has to hunt past letters to find a digit.

Does it cost anything?

No. Every tool on Reppilo is free to use, with no adverts.

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