How Long? Count the Units
K.MD.A.1
NameDate
How many units long?
1.
How many units long?
2.
How many units long?
3.
How many units long?
4.
How many units long?
LessonPrint · K.MD.A.1 · Set 1 · free to copy for classroom use
How Long? Count the Units is a free printable Kindergarten maths worksheet on measuring a length by counting unit lengths, aligned to Common Core standard K.MD.A.1. It prints 4 questions with an answer key on its own sheet of paper, in 25 versions, 21 of them with different questions, so no two pupils 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.
Next setAnswer key — How Long? Count the Units
Set 1. Prints on its own sheet.
- 1.6
- 2.3
- 3.7
- 4.8
Questions about How Long? Count the Units
What does the How Long? Count the Units worksheet cover?
It practises measuring a length by counting unit lengths — 4 questions for Kindergarten, all on Common Core K.MD.A.1: Describe how long or how heavy something is. The instruction to pupils is “How many units long?”, and the answer key follows on the next sheet.
Which Common Core standard does How Long? Count the Units practise?
CCSS.MATH.CONTENT.K.MD.A.1 — K.MD.A.1, in the Measurement & Data domain for Kindergarten. The published standard reads: “Describe measurable attributes of objects, such as length or weight. Describe several measurable attributes of a single object.” The worksheet assesses that standard rather than a paraphrase of it.
What age or grade is this worksheet for?
How Long? Count the Units is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.MD.A.1, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.
Does How Long? Count the Units come with an answer key?
Yes. All 4 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 How Long? Count the Units can I print?
25 versions, of which 21 ask genuinely different questions — this skill does not have 25 distinct questions to give, so the rest reorder them and no two pupils still share a paper. Set 1 downloads all 25 as one PDF.
Is How Long? Count the Units free to print and photocopy?
Yes. How Long? Count the Units, 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 K.MD.A.1
Describe how long or how heavy something is.
Last reviewed 2026-09-05. Aligned to K.MD.A.1 of the Common Core State Standards for mathematics.