Ordinal Numbers Worksheets for 1st Grade
Convert between a number and its ordinal form (1st-20th). 15 free printable worksheets, each with an answer key.
Save to PinterestFree Ordinal Numbers Worksheets
Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.
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Worksheet #15
Ordinal Numbers: what children learn
Ordinal numbers ("1st, 2nd, 3rd...") describe position or order in a sequence, unlike cardinal numbers ("1, 2, 3...") which describe quantity — both are everyday ways of using numbers.
Ordinal Numbers: worked example
4th = fourth
The ordinal numeral "4th" is written out as the word "fourth."
Ordinal Numbers: a common mistake to watch for
Kids often forget the special spellings for "first," "second," and "third" and instead write "oneth," "twoth," or "threeth" — these three are the ones worth memorizing by sight.
Ordinal Numbers: how to help at home or in class
Line up five stuffed animals or toy cars and ask questions: who is first, who is third, who is last? Then change the line and ask again so your child must look at the position rather than the toy. Have your child direct a short race and announce the finishing order. When your child can name positions up to tenth and also write the short forms such as 4th, add positions in longer lines.
What is on these Ordinal Numbers worksheets
This set has 15 different worksheets for 1st grade, with 10 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Write the missing number or word.”
Example questions like the ones on these worksheets, with their answers:
- ninth =9th
- fourth =4th
- eighth =8th
- 13th =thirteenth
- second =2nd
- 11th =eleventh
- fourteenth =14th
- 1st =first
Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers