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Free 1st Grade Math Word Problems Worksheets (within 20)

The worksheet generator on this page produces 1st grade math word problems worksheets with real, freshly randomised numbers — 20 of them per sheet by default — plus the answer key a parent or teacher needs to mark it quickly. The version loaded below opens with items in the shape of “Zoe had 11 shells and was given 6 more. How many shells now?” and “Liam saved 17 points and spent 10. How many points remain?”; the key lists 17 and 7 next to their question numbers.

📄 1ST GRADE MATH WORD PROBLEMS WORKSHEETS — A NEW SHEET EVERY TIME YOU PRESS THE BUTTON
🎲 New set of problems

‘New set of problems’ opens the generator in its own tab. There you can change the problem count and turn the answer key on or off. ‘Print or save as PDF’ opens the print dialog — choose Save as PDF in the printer list to keep the file. The sheet fits US Letter and A4, and the answer key prints on its own page.

What this worksheet practises

The reliable routine is to read it twice, say what is being asked in your own words, write the number sentence, then calculate. Skipping straight to the numbers is what produces confident wrong answers.

A word problem tests two things at once: whether the child can choose the operation, and whether they can carry it out. On a problem like “Zoe had 11 shells and was given 6 more. How many shells now?”, the arithmetic behind 17 is usually the easy part.

Key words help and mislead in roughly equal measure. 'Altogether' usually means add and sometimes does not, so the child still has to picture the situation.

Because the names, objects and numbers regenerate, the child cannot recognise a problem type by its wording alone.

These 1st grade math word problems worksheets are commonly aligned with the problem-solving expectations for this grade, and the skill appears in most curricula somewhere around this point.

A sample of this sheet, with answers

These six come from the sheet loaded on this page. Press the button and the numbers change, but the shape stays the same (totals under 25).
#ProblemAnswerWhat to check
1Zoe had 11 shells and was given 6 more. How many shells now?17Watch for: missing a step in a two-step problem
2Liam saved 17 points and spent 10. How many points remain?7Check: grabbing the numbers and guessing the operation
3Liam had 12 cards and was given 12 more. How many cards now?24Look at: being thrown by unfamiliar names or objects
4There were 10 seats. 5 were taken. How many seats are empty?5Ask about: dropping the units
5A box holds 12 stickers. Another box holds 11. How many altogether?23Watch for: not checking whether the answer is sensible
6Liam had 15 stickers and gave away 10. How many are left?5Check: answering a different question

Start with one worked example

A good first problem to do together is “Zoe had 11 shells and was given 6 more. How many shells now?”, which comes out at 17. Do “Zoe had 11 shells and was given 6 more. How many shells now?” once with the child narrating, then hand over the pencil and start the clock on the other 20 problems.

Take the first problem on the sheet as it stands, “Zoe had 11 shells and was given 6 more. How many shells now?”. Work “Zoe had 11 shells and was given 6 more. How many shells now?” out on paper rather than in your head the first few times, say each step aloud, and check the result against 17 on the key before moving on.

The three errors worth watching for

How to use these worksheets at home

  1. Read the first two problems out loud together before starting the clock. It costs fifteen seconds and removes most of the 'I did not understand the question' errors.
  2. Keep the session to about 12 minutes. A 1st grader who is still counting on fingers will need longer than that on a line like “Zoe had 11 shells and was given 6 more. How many shells now?”, and that is fine: the timer is a measurement, never a punishment.
  3. Write the finish time and the score at the top of every sheet. Two weeks of those two numbers tells you more about progress on math word problems than any single test result.
  4. Run the sheet at the same time each day. Ten focused minutes before dinner beats an hour on Sunday, because math word problems is a recall skill: “Zoe had 11 shells and was given 6 more. How many shells now?” has to arrive without being worked out, and recall is built by frequency.
  5. Do not raise the number of problems until the accuracy is steady. Going from 20 correct-but-slow problems to more problems only multiplies the same mistake.

About the answer key

The answer key is generated with the worksheet, not written by hand, so it always matches the sheet in front of you — “Zoe had 11 shells and was given 6 more. How many shells now?” is listed as 17, “Liam saved 17 points and spent 10. How many points remain?” as 7, and so on down the page.

The key prints on its own page by default. Uncheck the answer-key box before printing if you would rather keep it back and mark the sheet yourself.

How to print this worksheet

To save these 1st grade math word problems worksheets instead of printing them, choose 'Save as PDF' in the printer list. You get the worksheet and the answer key as a single PDF, on Letter or A4 depending on your printer settings.

For a class set, print one sheet, press the new-worksheet button and print again. Each child gets different numbers on the same skill, so nobody can copy the answer to “Zoe had 11 shells and was given 6 more. How many shells now?” from a neighbour.

Frequently asked questions

Can I change how many problems are on the page?
Yes — the generator takes 10, 20 or 30 problems. Twenty is the default because it fits one page and suits a 12-minute drill.
Should they draw a picture?
For anything involving groups, sharing or comparison, yes. A bar model or a simple sketch converts a reading problem into a visible arithmetic one.
Why is my child good at calculation but bad at word problems?
Because the two skills are separate. Choosing the operation is a comprehension task, and it needs its own practice — which is exactly what this sheet is for.
Are these worksheets really free?
Yes, completely. The page is supported by advertising, not by subscriptions, so there is no limit on how many 1st grade math word problems worksheets you print.

Print a sheet of 1st grade math word problems worksheets, run it for 12 minutes, mark it together, and come back tomorrow for a different set of numbers on the same skill.

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→ Free 1st Grade Math Worksheets  ·  → Free Word Problems Worksheets

Free printable math worksheets from a working math academy director in Korea. Problems come from our own code, not from a published workbook. Every sheet prints on US Letter or A4 with its answer key. All worksheets · Worksheet generator · Korean site
Last updated: 2026-09-13