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Activity
Houghton Mifflin Harcourt

Curious George Learns to Count

For Teachers K - 2nd Standards
The magic number is 100. A collection of fun activities, this guide provides educators with ideas for young mathematicians to practice counting to 100.
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Printables
Love The Day Designs

100 Days Smarter

For Teachers Pre-K - 5th
Get your youngsters excited for the 100th day of school with this great printable! It includes one page of labels that read 100 Days Smarter, as well as a page with a larger size of the same label.
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Printables
Super Teacher Worksheets

Number Line

For Teachers K - 4th
It's a printable number line to 100! Cut it out and use the easy tabs to glue into one long number line. 
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Worksheet
Curated OER

Multiplying by 100

For Students 4th - 6th
In this math worksheet, students learn the tricks to multiply any number by 10, 100 or 1000. There are 75 problems on 3 pages, both written horizontally and vertically with instructions and picture illustrations to help students.
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Worksheet
Curated OER

Counting Up and Down

For Students 1st Standards
These number sequences are missing quite a few digits; can your scholars determine some of them? Because learners aren't filling in every blank, they must utilize mental math to determine only the few numbers indicated. They count...
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Lesson Plan
Curated OER

Multiplying Whole Numbers and Decimals

For Teachers 4th - 7th
Upper elementary and middle school learners explore number sense by completing a list of multiplication problems in class. Learners discuss the difference between whole numbers and decimals while solving multiplication problems. They...
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PPT
Curated OER

Who Wants to Win Millions: Estimation and Rounding

For Teachers 4th - 5th
Rounding numbers can be fun using this game. Learners estimate and round numbers to the tens, hundreds, and thousands using this presentation. What a clever way to review this concept.
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Lesson Plan
Curated OER

The Counting Caterpillar

For Teachers K
A daily counting routine builds a caterpillar with 100 body segments (marked with symbols to indicate 2s, 5s, and 10s) by the 100th day of school. Provides structured repetition as part of the morning routine so that by 100th day,...
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Worksheet
Math Worksheets Land

Add and Subtract to 100

For Students 2nd - 3rd Standards
Get some practice with double-digit addition and subtraction from all directions! Learners complete two equations for each operation, one horizontally and one vertically. Consider your objective with this one; do you want scholars to use...
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Worksheet
Curated OER

Comparing Shapes That Represent 3 Digit Numbers

For Students 1st - 2nd
Engage your kids visually in number comparison with this shapes activity. They examine 16 sets of shapes with the knowledge that each represents 100 units of that shape. Each set is paired with another, and scholars indicate whether or...
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Worksheet
Math Worksheets Land

Add and Subtract within 100- Guided Lesson

For Students K - 2nd Standards
Word problems are the name of the game here, and each one comes with an image to help learners visualize the math operation. Careful, though; the visual for the first scenario is confusing. The problem gives a total number of sports...
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Worksheet
Curated OER

100 Hungry Ants

For Students 2nd - 4th
After hearing the story, One Hundred Angry Ants, learners apply what they have seen to a math challenge. They choose one of three numbers: 12, 24, or 36. Imagining this were the number of ants going to a picnic, they consider how many...
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Lesson Plan
Curated OER

100th Day Celebration

For Teachers K - 2nd
Learners celebrate the 100th day of school with a variety of math and language arts activities based on the number 100. They make books, count objects, and draw their predictions about life 100 years from now. They also estimate the time...
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Interactive
Curated OER

Change Mixed Numbers to Decimals: Denominator is 10, 100, 1000

For Students 4th - 6th
In this change mixed numbers to decimals: denominator is 10, 100, 1000 worksheet, students interactively convert 10 mixed numbers to decimals with immediate online feedback.
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Worksheet
Curated OER

Number Round-Up

For Students 4th - 5th
In this math worksheet, learners practice rounding numbers to the nearest ten, hundred, or thousand in sets of twelve. They round their ages to the nearest ten, and round a 5 digit number to the nearest ten, hundred, thousand, and ten...
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Worksheet
Curated OER

Number Bonds

For Students 2nd - 4th
This would be an appropriate learning exercise to complete on the 100th day of school. Learners will practice calculating number bonds up to 100. They will practice 31 addition problems, with plenty of room to do their work on the...
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Worksheet
Curated OER

100 Bubbles

For Students K - 3rd
For this numbers worksheet, students write the numbers 1-100 inside pictures of bubbles and color odd numbers green, even numbers yellow. A website reference for additional resources is given.
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Worksheet
Curated OER

Completing the Next Hundred

For Students 3rd - 5th
In this hundreds worksheet, students fill in the missing addend and complete the hundred numbers at the end of the problems. Students complete 3 sets of problems.
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Worksheet
Curated OER

One Hundred: Draw Pictures or Write

For Students 2nd - 4th
For this math and writing worksheet, students choose to draw pictures or write about the given four topics: 100 dollars, 100 pounds, 100 miles and 100 years.
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Worksheet
Curated OER

Handwriting Numbers From 1-100

For Students 1st - 2nd
In this handwriting numbers from 1-100 worksheet, students trace over the numerals, five in each row, with 20 rows, from 1-100.
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Lesson Plan
Curated OER

100 Stamps for 100 Days

For Teachers 2nd
Second graders count by 2's to get to 100. In this counting lesson plan, 2nd graders use the program Kid Pix to create stamps two at a time until they get to 100.
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Worksheet
Curated OER

Model Numbers to 100

For Students 1st - 3rd
In this numbers worksheet, students solve 6 word problems, using picture models of cubes. Problems are set up using groups of ten.
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Worksheet
Curated OER

Three-Digit Patterns

For Students 2nd
Second graders complete patterns. In this basic problem solving worksheet, 2nd graders continue 6 number patterns. This would be a perfect homework assignment after a lesson on number patterns.
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Worksheet
Curated OER

Numbers Table Exercise

For Students K - 1st
In this numbers table worksheet, students practice filling in each blank with the correct sequential number in a list going from one to one hundred.