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Which Unit Would You Use? is a free printable Grade 4 math worksheet on choosing inches, miles, ounces or pounds for a measurement, aligned to Common Core standard 4.MD.A.1. It prints 5 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.

Set 1 of 25 · the same problems every time you open this link.

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All 25 sets ask different questions.

Which Unit Would You Use?

4.MD.A.1

NameDate

Sort each one into the right box.

1.Sort each one into the right box.

Sort: the weight of a strawberry, the distance to the next town, the weight of a letter, the weight of a watermelon

InchesMilesOuncesPounds
2.Sort each one into the right box.

Sort: the weight of a strawberry, the distance to the next town, the length of a marathon, how far a car drives in an hour

InchesMilesOuncesPounds
3.Sort each one into the right box.

Sort: the weight of a spoon, the length of a crayon, the weight of a bag of potatoes, the width of a book

InchesMilesOuncesPounds
4.Sort each one into the right box.

Sort: the length of a crayon, the weight of a bicycle, the width of a book, the weight of a slice of bread

InchesMilesOuncesPounds
5.Sort each one into the right box.

Sort: the weight of a spoon, the weight of a dog, the weight of a slice of bread, the weight of a bag of potatoes

InchesMilesOuncesPounds

LessonPrint · 4.MD.A.1 · Set 1 · free to copy for classroom use

Answer key — Which Unit Would You Use?

Set 1. Prints on its own sheet.

  1. 1.Inches: —; Miles: the distance to the next town; Ounces: the weight of a strawberry, the weight of a letter; Pounds: the weight of a watermelon
  2. 2.Inches: —; Miles: the distance to the next town, the length of a marathon, how far a car drives in an hour; Ounces: the weight of a strawberry; Pounds: —
  3. 3.Inches: the length of a crayon, the width of a book; Miles: —; Ounces: the weight of a spoon; Pounds: the weight of a bag of potatoes
  4. 4.Inches: the length of a crayon, the width of a book; Miles: —; Ounces: the weight of a slice of bread; Pounds: the weight of a bicycle
  5. 5.Inches: —; Miles: —; Ounces: the weight of a spoon, the weight of a slice of bread; Pounds: the weight of a dog, the weight of a bag of potatoes

Questions about Which Unit Would You Use?

What does the Which Unit Would You Use? worksheet cover?

It practices choosing inches, miles, ounces or pounds for a measurement — 5 questions for Grade 4, all on Common Core 4.MD.A.1: Know how big units are compared with each other, and write a measurement in a larger unit as one in a smaller unit. The instruction to students is “Sort each one into the right box”, and the answer key follows on the next sheet.

Which Common Core standard does Which Unit Would You Use? practice?

CCSS.MATH.CONTENT.4.MD.A.1 — 4.MD.A.1, under Measurement & Data for Grade 4. The published standard reads: “Know relative sizes of measurement units within one system of units including km, m, cm; kg, g; lb, oz.; l, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit. Record measurement equivalents in a two-column table.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Which Unit Would You Use? is written for Grade 4, typically ages 9-10. It is one of the sheets on 4.MD.A.1, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.

Does Which Unit Would You Use? come with an answer key?

Yes. All 5 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 Which Unit Would You Use? 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 Which Unit Would You Use? free to print and photocopy?

Yes. Which Unit Would You Use?, 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 4.MD.A.1

Know how big units are compared with each other, and write a measurement in a larger unit as one in a smaller unit.

All Grade 4 worksheets

Last reviewed 2026-09-05. Aligned to 4.MD.A.1 of the Common Core State Standards for Mathematics.