Skip to content
Start My 3 Free Days $0 today · cancel anytime

Cardinal Numbers Resources

10 cardinal numbers resources: 5 activities, 4 videos, 2 songs and more. How teachers use these

Cardinal Numbers Resources

10 cardinal numbers resources: 5 activities, 4 videos, 2 songs and more. How teachers use these

Worksheet
Worksheet1st GradeMatching Number Names Worksheet

This matching number names worksheet helps 1st grade students connect numerals from zero to twenty with their number words. An answer key is included, making practice quick to check and confidence easy to build.

Activity
ActivityKindergartenEaster Number Order 0-30 Activity

This Easter number order 0-30 activity has children put 30 egg cards in order and fill in a number path. Made for Kindergarten and 1st grade, with a practice page and answer key included.

Activity
ActivityPreschoolNumber Word Lights Activity

Using Number Word Lights Activity, students match the number with the number word in order to build their math fluency.

Activity
ActivityKindergartenEaster 0-100 Number Order Activity

This Easter 0-100 number order activity lets kindergarten and 1st grade students put colorful egg cards in order and fill in an egg hundred chart. A practice page and answer key are included.

Activity
ActivityKindergartenOrdering Numbers 0-30 Christmas Activity

In this ordering numbers 0-30 Christmas activity, children sort 30 holiday number cards and line each set up from least to greatest. Made for Kindergarten and 1st grade, with a practice page and answer key included.

Activity
Activity1st GradeOrdering Numbers 0-100 Christmas Activity

This ordering numbers 0-100 Christmas activity has 1st to 2nd Grade students sort 24 holiday number cards and order each set from least to greatest. Answer key included.

From our teachers' playbook

How many? Let's count and see!

What do kids learn about cardinal numbers?

Cardinal numbers answer one simple question: how many? When a child counts five apples and says "five," that last number tells the whole amount, and that idea is called cardinality. Young learners match number words to numerals (7 = seven), count objects one by one without skipping, and learn that the total stays the same no matter how the objects are arranged. Later they put numbers in order and compare them with greater than and less than. Cardinal numbers are different from ordinal numbers, which tell position: 3 is cardinal, 3rd is ordinal.

Our favorite ways to make cardinal numbers stick

Counting is the foundation for every bit of math that follows. These moves help kids truly understand what a number means, not just recite it.

Count it out loud

Songs give kids the number sequence for free, without a single worksheet. Sing the counting song and hold up fingers for each number. Then stop the music on a random number and ask "How many fingers?" so the song turns into real counting.

Why it works: words set to a repeating melody are easier to recall than the same words spoken (Wallace, 1994).

I Love to Count from 1 to 10 SongTry it withI Love to Count from 1 to 10 SongSongsOpen it →

Touch, count, tell

Give each child a handful of counters. They touch each one as they count, then push them into a pile and answer "How many?" without recounting. When they say the last number with confidence, cardinality has clicked.

Why it works: the U.S. Department of Education's guide for teaching elementary math recommends moving from hands-on objects to drawings to numbers.

Count Objects 1 to 5 Micro LessonTry it withCount Objects 1 to 5 Micro LessonVideosOpen it →

Number word match-up

Kids often know "6" but freeze at "six." Say a number word out loud, have a partner find the numeral, then both explain how they knew. Talking it through links the spoken word, the written word and the digit.

Why it works: using clear, consistent math words out loud is one of the U.S. Department of Education's recommendations for elementary math.

Matching Number Names WorksheetTry it withMatching Number Names WorksheetWorksheetsOpen it →

Questions teachers and parents ask

What is a cardinal number?

A cardinal number tells how many of something there are, like 1, 5 or 20. If you have four crayons, four is the cardinal number. It answers the question "How many?"

What is the difference between cardinal and ordinal numbers?

Cardinal numbers tell how many (three cookies). Ordinal numbers tell position or order (third in line). A quick way to remember: ordinal sounds like order.

At what age do kids understand cardinality?

Most children start to understand it around ages 3 to 5. You'll know it has clicked when a child counts a group and then answers "How many?" with the last number instead of counting again.

How can I practice cardinal numbers at home?

Count everything! Stairs, grapes, socks in the laundry. After counting, ask "So how many are there?" and celebrate when they answer with the last number they said.

Why does my child skip numbers when counting objects?

It usually means the counting words and the touching aren't lined up yet. Have them move each object to a new pile as they count. That one-to-one matching fixes most skipped and double-counted items.

Keep exploring