A chart with about a third of the numbers missing, a chart where only the first number of each row is given, or a full chart for skip counting by 2s, 5s or 10s.

1 to 100 or 1 to 120?

Reception children count beyond 20, and Year 1 counts to and across 100. The 1 to 120 chart is there for children ready to keep going past 100.

Are answer keys included?

Yes, and every version of a missing-numbers chart has different blanks.

Should Year 1 children know numbers to 120?

The national curriculum doesn’t set 120 as a target. It asks Year 1 pupils to count to and across 100 and to read and write numbers to 100. The 1 to 120 chart is a handy way to practise crossing 100, not an extra requirement.

Hundreds Chart Worksheets: Missing Numbers, Fill-In and Skip Counting

Patterns in the hundreds chart

Down a column every number grows by ten; along a row, by one. Filling in missing numbers makes children use those patterns instead of counting from 1 every time.

More counting

Try skip counting and number lines.

Curriculum links in England

ReceptionChildren count aloud beyond 20, recognising the repeating pattern of the counting system.
Year 1Pupils count to and across 100, forwards and backwards, from any number, and find one more and one less.
Year 2Children count in 10s from any number, forwards and backwards: a pattern that runs straight down a column.

Schools in England call this a hundred square, and most infant classrooms have one on the wall. The national curriculum asks Year 1 children to count across 100, not to stop at it, and that is where the 1 to 120 chart helps.

Counting backwards is part of the Year 1 statement too, so once the missing numbers are filled in, read a row from right to left or a column from the bottom up. In Year 2, start on a number like 34 and count down the column in tens, then back up again.

Summarised in our own words from the EYFS statutory framework (early learning goals) and the National Curriculum in England: mathematics programmes of study (DfE).