Addition and subtraction
Within 10, within 20 bridging ten, within 100 and with three digits without carrying.
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Teaching guide: how to practise mental maths
Mental maths becomes automatic through short, frequent practice. This free mental maths worksheet generator builds drills of 50 to 100 facts in line, with time and score boxes so every pupil can see their progress, and an answer key ready for marking.
- For
- Elementary 1st, 2nd, 3rd, 4th, 5th, 6th (ages 6-11)
- Subject
- Mathematics › Arithmetic
- Includes
- Student sheet and answer key
- Format
- A4, to print or save as PDF; new exercises every time
- Price
- Free, no sign-up
- Available in
- Catalan, Spanish, English
Student worksheet 
Answer key Number bonds
Bonds to 10, to the next ten, to 100 and to 1000.
10 and ± 100
Adding and subtracting tens and hundreds, also crossing a hundred (395 + 10).
Doubles and halves
From double 7 to half of 340: the basis of many mental strategies.
Tables, division and × 10, 100 and 1000
Shuffled times tables facts, division facts, tens and hundreds divided by one digit and in parts, and multiplying and dividing by 10, 100 and 1000.
Time, score and answer key
Every drill has boxes for the time taken and the score, and the answer key shows the results in blue.
Frequently asked questions about mental maths worksheets
Which grades are these worksheets for?
The whole of primary school: addition and subtraction to 20 and bonds to 10 for Grades 1 and 2, times tables and calculation to 100 for Grades 2 to 4, and bonds to 1000, doubles of bigger numbers and × 1000 for Grades 5 and 6.
How do I use a drill?
Pupils work through the facts as quickly as they can, writing only the answer. When they finish they note the time and, once it is marked, their score. Repeating the same drill a few days later shows their progress clearly.
Can I make shorter drills?
Yes. Under “More options” in the wizard, in “Exercises per sheet”, choose 100, 80, 60 or 50 facts. With fewer facts the print is larger, ideal for younger pupils.
Do facts repeat within a drill?
No, as long as the level has enough different ones. Bonds to 10 and doubles to 10 are few, so they come back in a different order to fill the drill, never twice in a row.
Do the worksheets change every time?
Yes. Tap the drill on the sheet and click “New” to get new facts with the same settings. “Duplicate” adds another drill with new facts to the same worksheet.
How do I print only the answer key?
Click “Print” and choose “Answer key”; “Worksheet and answer key” prints both in one go. You can check it first in the Answer key view at the top.
Is any pupil data sent anywhere?
No. Worksheets are generated in your browser and templates are saved in your browser's memory.
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