This page makes free printable unit rate worksheets on demand: press the button and you get a new sheet of 20 problems with a matching answer key, ready for US Letter or A4 paper. The current sheet starts with problems like 8 items cost $34.40. One item and 8 items cost $45.20. One item, and the answers ($4.30 and $5.65) are printed on the key so marking takes about a minute.
‘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.
Because each sheet is new, the scale factor changes from problem to problem instead of settling into a pattern.
A ratio compares two quantities without saying how much of either there is. Completing 8 items cost $34.40. One item to $4.30 means keeping that comparison fixed while both numbers grow.
The order of the two parts matters, and it matters more than children expect. A ratio written the wrong way round is simply a different ratio.
Equivalent ratios work exactly like equivalent fractions: multiply or divide both sides by the same number. Children who see that connection stop treating ratio as a new topic.
Work of this kind is commonly aligned with the ratio and proportional relationships strand for grade 6; schools outside the US meet the same skill at roughly the same age, which is why these unit rate worksheets travel well.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 8 items cost $34.40. One item = | $4.30 | Watch for: scaling only one part |
| 2 | 8 items cost $45.20. One item = | $5.65 | Check: ignoring units in a rate |
| 3 | 4 items cost $35.60. One item = | $8.90 | Look at: adding instead of multiplying |
| 4 | 5 items cost $23.00. One item = | $4.60 | Ask about: confusing a ratio with a fraction of the whole |
| 5 | 3 items cost $11.55. One item = | $3.85 | Watch for: missing an obvious simplification |
| 6 | 3 items cost $8.40. One item = | $2.80 | Check: reversing the order |
The item 8 items cost $45.20. One item is worth doing slowly. The answer to 8 items cost $45.20. One item is $5.65, and the route to it is the route every other problem on this sheet takes — which is why the sheet has 20 of them rather than one.
A good first problem to do together is 8 items cost $34.40. One item, which comes out at $4.30. Do 8 items cost $34.40. One item once with the child narrating, then hand over the pencil and start the clock on the other 20 problems.
Every generated sheet carries its own key on a separate printed page, which lets a child self-mark without seeing the answers while they work.
Because the numbers are random, there is no shared answer list to look up: the key printed behind your sheet is the only one that fits it, and it shows $4.30 for 8 items cost $34.40. One item.
Printing works the same on US Letter and A4, because the layout uses relative widths rather than fixed inches. Set margins to default and scaling to 100%, and all 20 problems fit.
The sheet is laid out to fit one page on both US Letter and A4. Leave the browser scaling at 100% and turn headers and footers off, and the 20 problems land inside the margins on either paper size.
One sheet of unit rate worksheets a day for two weeks will tell you more about where a child working at this level actually stands than any single long assessment.
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