Teen Numbers as Ten and Ones
1.NBT.B.2
NameDate
Fill in the missing part.
1.17 = 10 + ___
2.19 = 10 + ___
3.14 = 10 + ___
4.18 = 10 + ___
5.12 = 10 + ___
LessonPrint · 1.NBT.B.2 · Set 1 · free to copy for classroom use
Teen Numbers as Ten and Ones is a free printable Grade 1 maths worksheet on the special case of eleven to nineteen, aligned to Common Core standard 1.NBT.B.2. It prints 5 questions with an answer key on its own sheet of paper, in 25 versions, 22 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 — Teen Numbers as Ten and Ones
Set 1. Prints on its own sheet.
- 1.7
- 2.9
- 3.4
- 4.8
- 5.2
Questions about Teen Numbers as Ten and Ones
What does the Teen Numbers as Ten and Ones worksheet cover?
It practises the special case of eleven to nineteen — 5 questions for Grade 1, all on Common Core 1.NBT.B.2: Know that in 47, the 4 means four tens and the 7 means seven ones. The instruction to pupils is “Fill in the missing part”, and the answer key follows on the next sheet.
Which Common Core standard does Teen Numbers as Ten and Ones practise?
CCSS.MATH.CONTENT.1.NBT.B.2 — 1.NBT.B.2, in the Number & Operations in Base Ten domain for Grade 1. The published standard reads: “Understand that the two digits of a two-digit number represent amounts of tens and ones.” The worksheet assesses that standard rather than a paraphrase of it.
What age or grade is this worksheet for?
Teen Numbers as Ten and Ones is written for Grade 1, typically ages 6-7. It is one of the sheets on 1.NBT.B.2, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.
Does Teen Numbers as Ten and Ones 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 Teen Numbers as Ten and Ones can I print?
25 versions, of which 22 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 Teen Numbers as Ten and Ones free to print and photocopy?
Yes. Teen Numbers as Ten and Ones, 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 1.NBT.B.2
Know that in 47, the 4 means four tens and the 7 means seven ones.
- Tens and Ones — Split the NumberBreak each number into tens and ones.
- Tens and Ones — Build the NumberFill in the missing part.
- What Is the Digit Worth?Fill in the missing part.
- Expanded Form to 99Write each number in expanded form.
- Whole TensFill in the missing part.
- Ten More, Ten LessWork out each answer.
Last reviewed 2026-09-05. Aligned to 1.NBT.B.2 of the Common Core State Standards for mathematics.