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Missing Numbers 1–100 Worksheet: Free Printable
A free printable missing numbers 1–100 worksheet with answer key. Print it or save as PDF, with skip-counting colours and missing-number practice.
Hundred chart
Print a 1–100 or 1–120 chart, a missing-numbers worksheet, or a blank chart to fill in. Colour the skip-counting pattern.
Tip: print the worksheet for your child and the answer key for yourself. Choose “Save as PDF” as the printer to keep a copy.
Fill in the missing numbers
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📚 Curriculum sources: Common Core Kindergarten: Counting & Cardinality · Common Core Grade 1: Number & Operations in Base Ten · National curriculum in England: mathematics
Our worksheets and games follow school curriculum standards (US Common Core and the national curriculum in England). Every answer key is worked out by the computer, not typed by hand.
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Patterns to spot
Going down one row adds 10. Going right one square adds 1. Every number in the last column ends in 0: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100.
Try this: cover a number with your finger and ask your child what's hidden. Then ask what's one more, one less, ten more and ten less.
US Common Core: count to 100 by ones and tens in kindergarten, to 120 in Grade 1. England: count to 100 in Year 1, in 2s, 5s and 10s.
Questions grown-ups ask
What is a hundred chart used for?+
Counting to 100, spotting patterns (each row is 10 more), skip counting, and adding or taking away 1 and 10.
100 chart or 120 chart?+
US first graders count to 120 (Common Core), so many teachers use a 120 chart from Grade 1.