Mental maths practice with addition and subtraction, from number bonds to sums to a thousand
Mental maths practice with addition and subtraction: a sum on the screen, type the answer, find out straight away whether it was right. You choose the kinds of sum yourself, from number bonds to sums to a thousand, adding, subtracting or both. Whatever went wrong or slowly comes back more often. Works without an account. Free, no adverts.
How it works
Choose the kinds of sum
Switch on the kinds of sum you want to practise: number bonds, up to ten, jumping to 100, and so on, with Add, Subtract or Add and subtract underneath. Three example sums show what is coming.
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.
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. You carry on until you press Stop.
Practise the ones you missed
After Stop you see per kind of sum how many went right and quickly. "Practise the ones I missed" carries on with exactly the sums that still took effort.
Why the first kind is number bonds and not an addition
The first kind on this tool is 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 for itself what five and three make together.
After that come sums up to ten, jumping in tens to a hundred, sums up to twenty, crossing ten, and on to sums with hundreds and tens up to a thousand. Ten kinds in all, in the order a class learns them. A sum that went wrong or slowly comes back a few sums later.
On the classroom board, and with a test or a race
Want the whole class to spend a while crossing ten? Switch on only "Crossing ten" and let the class answer together. With Answers set to Multiple choice there are four buttons under the sum, handy on a board you touch.
Next to Practise there are Practice test and Race, on the sums you choose. What maths fluency is, and how a practice test or a race shows whether sums to 20 are right and quick, is on the Maths fluency page. There you also practise sums to 20 and times tables mixed together.
What happens to an answer
A round stays in the browser. The tool keeps no answers from a child, also when the child signs in, and nothing a child practises here counts for its class. A teacher who signs in and practises earns points with a round; even then the sums themselves are not kept.
Frequently asked questions
Do I need to make an account?
No, the tool works without signing in, and with an account it works the same way. A teacher who signs in earns points with a round.
Does what a child practises here count for the class?
No. The tool keeps nothing for a child: no answers, no points and no minutes towards a task.
Can I choose which sums are asked?
Yes: the kinds of sum, and whether they add, subtract or both. You switch them on right on the page.
Does it include times tables or division?
No. This tool only practises addition and subtraction. Reppilo has a separate tool for the times tables.
Does it work on the classroom board for the whole class?
Yes. A teacher switches on the kind of sum being learnt at the time and has the whole class practise together, also without signing in.
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. You can also set Answers to Multiple choice: four buttons to tap.
Does it cost anything?
No. Every tool on Reppilo is free to use, with no adverts.
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