πŸ”’ MathLevel 1Lesson 1

Counting to 100

How to use: Download the PDF to print the worksheet. Then use this page to repeat activities and check answers.

Learning Objectives

  • 1Count forward by ones to 100 starting from any number
  • 2Find numbers on a hundred chart
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Mini Lesson

Numbers go all the way to 100 β€” and you can count every single one of them!

Counting by ones

  • Start at any number and say the next number: 1, 2, 3 … all the way to 100.
  • Example: Start at 7: 7, 8, 9, 10, 11…
  • Each number is exactly one more than the number before it.

The hundred chart

  • A hundred chart has 10 rows and 10 columns β€” 100 squares total.
  • Each row starts at a new ten: 1, 11, 21, 31 … 91.
  • Moving right adds 1. Moving down adds 10.

Counting in groups of ten

  • 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 β€” these are called decade numbers.
  • Every decade number ends in a zero.

The last number you say tells how many

  • When counting objects, the last number you say is the total count.
  • Count each object once β€” never skip, never count twice.
Mini hundred chart showing rows 1–40A grid of 40 numbered squares arranged in four rows of ten, colored in alternating blue and white to show the tens pattern.Hundred Chart (1–40)12345678910111213141516171819202122232425262728293031323334353637383940… continues to 100 …Decade numbers (10, 20, 30…)Odd numbersEven numbers
A partial hundred chart showing rows 1–40 with decade numbers highlighted in blue.
Counting on by one β€” number chainA chain of five numbered circles connected by arrows, each arrow labeled plus one, showing how counting forward works.Count on by 1 each time17181920+1+1+120 = a decade! πŸŽ‰Each step forward = one more.The last number you say = the total!
Counting on by 1 from 17 to 20, with each +1 arrow shown and the decade number 20 highlighted.
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Ask yourself: "What number comes after 29? After 59? After 99?"

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Guided Practice

Tracing Pad

Tip: Say the number out loud as you trace it β€” counting aloud helps the number stick in your memory!

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Exercises

Read each question, then tap the correct number. Press Check all when you're done.

Tap the number that comes right after 19.

Tap all three decade numbers in this set.

Tap the number that comes right before 40.

Tap the number that is 10 more than 50.

Tap the number that comes right after 99.

1. What number comes right after 47?

2. Which of these is a decade number?

3. How many numbers fit in one row of a hundred chart?

4. On a hundred chart, the number directly below 24 is β€”

5. You count 8 apples: 1, 2, 3, 4, 5, 6, 7, 8. How many apples are there?

6. What number comes right before 70?

7. Which list shows counting by tens?

8. What is the biggest number on a hundred chart?

9. On a hundred chart, the number directly to the right of 55 is β€”

10. Which rule is most important when counting objects?

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Assessment

Parent / Teacher Checklist

Lesson 2 β†’