Counting by tens is a simple way to understand numbers up to 100. You start at zero and add ten each time: 10, 20, 30, and so on. Imagine you have stacks of ten blocks. Counting each stack helps you reach 100. This skill helps you understand place value and makes bigger math problems easier!
Think of it like climbing stairs, each step is a group of ten! Once you get to the top, you've reached 100. Practicing this helps you build a strong number sense. Let's get started!
Match the word with its definition:
| Word | Definition |
|---|---|
| Ten | A. The number after ninety |
| Twenty | B. A group of ten ones |
| Hundred | C. The number after ten |
| Thirty | D. The number after twenty |
| Ninety | E. The number after eighty |
Complete the sentences using the words from the box: tens, hundred, counting, number, groups
When we are ______ by tens, we make ______. For example, 10, 20, 30. When we reach one ______, we have 100. Each ______ represents a value. We use ______ to learn math.
Imagine you have 70 stickers. How many more stickers do you need to have 100 stickers in total? Explain how you figured it out.
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