These free Year 1 maths worksheets cover the main number, calculation, fractions and time objectives that children in England work on in their first year of Key Stage 1 (age 5 to 6). Each link opens a randomised sheet that you can print or download as a PDF, with an answer page at the end.
In Year 1 the national curriculum focuses on counting to 100, reading and writing numbers to 20, one more and one less, number bonds and addition and subtraction within 20, recognising a half and a quarter, and telling the time to the hour and half past the hour. The sheets below are grouped in that order, from the easiest to the hardest in each group.
Age 5 to 6 · Key Stage 1 · National curriculum in England
Try a Year 1 worksheet: Addition to 20
The sheet below is made fresh each time you load the page. Press Randomize for new questions, or Edit Worksheet to change the numbers.
Counting, ordering and place value
Start with counting objects, then move on to ordering numbers and filling gaps on number lines and 100 squares.
- Count the pictures and write the number (up to 10)
- Ordering numbers from 0 to 10
- Ordering numbers from 0 to 20
- Number line: count on in steps of 1
- Number line: count in steps of 2
- Number line: count in steps of 5 or 10
- 100 square with missing numbers (1 to 100)
- Draw 1 more
- Draw 1 less
Addition and subtraction within 20
Number bonds and single-step sums. The 'to 10' sheets keep every answer at 10 or below.
- Addition to 10
- Addition to 20
- Adding 1 to any number below 20
- Subtraction to 10
- Subtraction to 20
- Subtracting 1 from any number below 20
Fractions
Year 1 children find half of a small group of objects.
Telling the time
Draw the hands on a clock for o'clock and half past times.
Sample sheet and answer key
This is one printed version of the addition to 20 worksheet. The PDF has the questions on page 1 and the answers on page 2.
Download the sample PDF with answers
For a different set of questions, use the Randomize button above or open any worksheet in the lists on this page.
More Year 1 maths topics
- First addition and subtraction (one more, one less)
- Counting to 12
- Addition worksheets
- Subtraction worksheets
- Number line worksheets
- Telling the time (clocks)
Frequently asked questions
What maths do children learn in Year 1?
In England, Year 1 maths covers counting to 100, reading and writing numbers to 20, one more and one less, number bonds and addition and subtraction within 20, halves and quarters of objects and shapes, measuring, and telling the time to the hour and half past.
Are these Year 1 maths worksheets free?
Yes. Every worksheet on this page is free to print or download as a PDF, and you can press Randomize for a new set of questions as often as you like.
Do the worksheets have answers?
Yes. Each generated worksheet includes an answer page after the questions. You can hide it with the Hide Answer Page button before printing.