📚 Topic Summary
Base ten block subtraction is a way to visualize and solve subtraction problems using blocks that represent ones, tens, and hundreds. When subtracting, you start with the larger number represented by blocks and then take away the blocks representing the smaller number. If you don't have enough ones to subtract, you need to exchange a ten block for ten ones. Similarly, if you don't have enough tens, you exchange a hundred block for ten tens. This makes subtraction easier to understand and perform!
🧠 Part A: Vocabulary
Match each term with its correct definition:
| Term |
Definition |
| 1. Ones Block |
A. Represents 100 |
| 2. Tens Block |
B. Taking away a number from another |
| 3. Hundreds Block |
C. Represents 1 |
| 4. Subtraction |
D. To exchange a larger block for smaller blocks of equal value |
| 5. Regrouping |
E. Represents 10 |
✏️ Part B: Fill in the Blanks
Use the words ones, tens, hundreds, subtraction, and regrouping to fill in the blanks.
When using base ten blocks for ________, we sometimes need to do ________. This happens when we don't have enough ________ to subtract from the ________ place. We can also use ________ blocks to represent the number in the ________ place.
🤔 Part C: Critical Thinking
Explain how base ten blocks help you understand subtraction better than just using numbers on paper. Give an example of a subtraction problem and how you would solve it with blocks.