Counting to 100 — Crossing the Tens
K.CC.A.1
NameDate
Write the missing numbers.
1.48505153
2.88909293
3.58606263
4.68707273
5.28303233
6.28293233
7.68707173
8.48495153
LessonPrint · K.CC.A.1 · Set 1 · free to copy for classroom use
Counting to 100 — Crossing the Tens is a free printable Kindergarten maths worksheet on the decade bridge, 29 to 30, aligned to Common Core standard K.CC.A.1. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask 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.
Answer key — Counting to 100 — Crossing the Tens
Set 1. Prints on its own sheet.
- 1.49, 52
- 2.89, 91
- 3.59, 61
- 4.69, 71
- 5.29, 31
- 6.30, 31
- 7.69, 72
- 8.50, 52
Questions about Counting to 100 — Crossing the Tens
What does the Counting to 100 — Crossing the Tens worksheet cover?
It practises the decade bridge, 29 to 30 — 8 questions for Kindergarten, all on Common Core K.CC.A.1: Count all the way to 100, both one at a time and in tens. The instruction to pupils is “Write the missing numbers”, and the answer key follows on the next sheet.
Which Common Core standard does Counting to 100 — Crossing the Tens practise?
CCSS.MATH.CONTENT.K.CC.A.1 — K.CC.A.1, in the Counting & Cardinality domain for Kindergarten. The published standard reads: “Count to 100 by ones and by tens.” The worksheet assesses that standard rather than a paraphrase of it.
What age or grade is this worksheet for?
Counting to 100 — Crossing the Tens is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.CC.A.1, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.
Does Counting to 100 — Crossing the Tens come with an answer key?
Yes. All 8 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 Counting to 100 — Crossing the Tens can I print?
25 — one per pupil, 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 Counting to 100 — Crossing the Tens free to print and photocopy?
Yes. Counting to 100 — Crossing the Tens, 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.
Is there a lesson plan to teach K.CC.A.1?
Yes — “Counting to 100 by Ones and Tens” is a 40-minute Kindergarten plan for K.CC.A.1, timed section by section, with the misconceptions to expect and an exit ticket. Counting to 100 — Crossing the Tens is the practice that follows it.
More practice for K.CC.A.1
Count all the way to 100, both one at a time and in tens.
Teaching this next? Counting to 100 by Ones and Tens is the 40-minute plan for it, with the misconceptions to expect.
Last reviewed 2026-09-05. Aligned to K.CC.A.1 of the Common Core State Standards for mathematics.