Count Within 1000

Grade 2 · mathematics · 95 practice problems · read aloud

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What is Counting Within 1000?

Counting within 1000 means being able to say, read, and write all the numbers from 1 all the way up to 999. It's like being a number explorer! 🗺️ This skill is super useful because it helps you understand bigger numbers you see every day, like the number of pages in a big book, how many people live in a town, or the price of a new bike.

How to Count to 1000

We count in a pattern. The secret is knowing what happens after 99!

  1. Start Small: You already know how to count to 100. (1, 2, 3, ... 98, 99, 100)
  2. The Big Pattern: After 100, we start a new cycle. We say "one hundred one," "one hundred two," all the way to "one hundred ninety-nine."
  3. Next Stop: 200! After 199 comes 200 (two hundred). Then we start again: 201, 202, 203... all the way to 999!

Let's Look at Some Examples

Example 1: What comes after 259?

Let's break it down. The number is 259 (two hundred fifty-nine). We just need to find the very next number.

Step 1: Look at the last two digits: 59.
Step 2: What comes after 59? 60!
Step 3: Put it together: 259 → 260 (two hundred sixty).

Example 2: Counting by 10s from 430

Counting by 10s is a fast way to move through numbers! The pattern is easy.

Start at 430 (four hundred thirty).
Next: 440 (four hundred forty), 450 (four hundred fifty), 460 (four hundred sixty)... all the way to 490!

Common Mistakes to Avoid

🚨 The Tricky "Hundred" Jump: The hardest part is going from 199 to 200, or 299 to 300. It feels like a big jump! Remember, it's just like going from 99 to 100. After one hundred ninety-nine comes two hundred.

🚨 Reading Numbers Wrong: Don't say "one hundred and thirty-five." Just say "one hundred thirty-five." The word "and" means a decimal point, which we'll learn about later!

Tips & Tricks

🔍 Use a Hundreds Chart: A hundreds chart is your best friend! You can see the whole pattern from 1 to 100. To go beyond, imagine a new chart for 101-200, 201-300, and so on.

✍️ Think in Blocks: A number like 647 is made of blocks: 6 hundreds, 4 tens, and 7 ones. This makes it easier to understand.

🎯 Find Patterns: Count by 10s, 5s, or 2s. This helps you see the number patterns and makes you a faster counter!

How to Practice

  • Number Line Race: Draw a long number line from 500 to 600. Have a toy race along it, saying the numbers out loud.
  • Mystery Number: Ask a friend, "I'm thinking of a number that is 10 more than 380. What is it?" (Answer: 390)
  • Real-World Counting: Count how many cereal pieces are in your bowl, or how many steps it takes to get from your classroom to the playground. Estimate if it's more or less than 100!

Practice problems

6 of the 95, worked through step by step — try them before opening the answer.

1 What number comes after 789?

Hint: Think about what happens when you count forward by one from any number.

Show the answer

Answer: 790

  1. Start with the number 789.
  2. To find the number that comes after, count forward by one.
  3. 789 + 1 = 790. The number that comes after 789 is 790.

2 What number comes before 832?

Hint: Think about what happens when you count backward by one from any number.

Show the answer

Answer: 831

  1. Start with the number 832.
  2. To find the number that comes before, count backward by one.
  3. 832 - 1 = 831. The number that comes before 832 is 831.

3 Skip count by 5s: 785, 790, __, 800

Hint: Look at the pattern of numbers and think about what number comes between 790 and 800 when counting by 5s.

Show the answer

Answer: 795

  1. Look at the sequence: 785, 790, __, 800
  2. The pattern is skip counting by 5s (adding 5 each time)
  3. 785 + 5 = 790
  4. 790 + 5 = 795
  5. 795 + 5 = 800
  6. The missing number is 795

The answer is 795.

4 Skip count by 5s: 715, 720, __, 730

Hint: Look at the pattern and think about what number comes between 720 and 730 when counting by 5s.

Show the answer

Answer: 725

  1. Look at the sequence: 715, 720, __, 730
  2. The pattern is skip counting by 5s (adding 5 each time)
  3. 715 + 5 = 720
  4. 720 + 5 = 725
  5. 725 + 5 = 730
  6. The missing number is 725

The answer is 725.

5 Skip count by 5s: 725, 730, __, 740

Hint: Look at the pattern of numbers and think about what number comes between 730 and 740 when counting by 5s.

Show the answer

Answer: 735

  1. Look at the sequence: 725, 730, __, 740
  2. The pattern is skip counting by 5s (adding 5 each time)
  3. 725 + 5 = 730
  4. 730 + 5 = 735
  5. 735 + 5 = 740
  6. The missing number is 735

The answer is 735.

6 Skip count by 5s: 840, 845, __, 855

Hint: Look at the pattern and think about what number comes between 845 and 855 when counting by 5s.

Show the answer

Answer: 850

  1. Look at the sequence: 840, 845, __, 855
  2. The pattern is skip counting by 5s (adding 5 each time)
  3. 840 + 5 = 845
  4. 845 + 5 = 850
  5. 850 + 5 = 855
  6. The missing number is 850

The answer is 850.

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