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Adding -s, -ed and -ing is a free printable Grade 1 English worksheet on reading a base word with an inflectional ending, aligned to Common Core standard RF.1.3. It prints 3 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

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All 25 sets ask different questions.

Adding -s, -ed and -ing

RF.1.3

NameDate

Sort each word into the right column.

1.Sort each word by its pattern: plural -s / -ed / -ing.

Sort: hands, singing, running, boxes, jumped, wanted

plural -s-ed-ing
2.Sort each word by its pattern: plural -s / -ed / -ing.

Sort: buses, reading, planted, helping, trees, landed

plural -s-ed-ing
3.Sort each word by its pattern: plural -s / -ed / -ing.

Sort: wanted, asking, dogs, asked, cats, sitting

plural -s-ed-ing

LessonPrint · RF.1.3 · Set 1 · free to copy for classroom use

Answer key — Adding -s, -ed and -ing

Set 1. Prints on its own sheet.

  1. 1.plural -s: hands, boxes; -ed: jumped, wanted; -ing: singing, running
  2. 2.plural -s: buses, trees; -ed: planted, landed; -ing: reading, helping
  3. 3.plural -s: dogs, cats; -ed: wanted, asked; -ing: asking, sitting

Questions about Adding -s, -ed and -ing

What does the Adding -s, -ed and -ing worksheet cover?

It practices reading a base word with an inflectional ending — 3 questions for Grade 1, all on Common Core RF.1.3: Read words with long vowels, silent e, digraphs and common endings. The instruction to students is “Sort each word into the right column”, and the answer key follows on the next sheet.

Which Common Core standard does Adding -s, -ed and -ing practice?

CCSS.ELA-LITERACY.RF.1.3 — RF.1.3, under Reading: Foundational Skills for Grade 1. The published standard reads: “Know and apply grade-level phonics and word analysis skills in decoding words.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Adding -s, -ed and -ing is written for Grade 1, typically ages 6-7. It is one of the sheets on RF.1.3, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.

Does Adding -s, -ed and -ing come with an answer key?

Yes. All 3 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Adding -s, -ed and -ing can I print?

25 — one per student, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Adding -s, -ed and -ing free to print and photocopy?

Yes. Adding -s, -ed and -ing, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

More practice for RF.1.3

Read words with long vowels, silent e, digraphs and common endings.

All Grade 1 worksheets

Last reviewed 2026-09-05. Aligned to RF.1.3 of the Common Core State Standards for English Language Arts.