🔢 Topic Summary
The 'Make a Ten' strategy is a clever way to solve addition problems, especially when one of the numbers is close to 10. Instead of directly adding two numbers, you break one of them down to help the other number reach 10. Once you have 10, adding the remaining amount becomes much easier! For example, to solve $8 + 6$, you can think of 6 as $2 + 4$. You then add the 2 to the 8 to make 10. Finally, add the remaining 4 to 10, giving you 14. This makes mental math much faster and less prone to errors.
This strategy is useful because our brains naturally find it easier to work with the number 10. By converting addition problems into something + 10, you can quickly arrive at the correct answer.
🧠 Part A: Vocabulary
Match the term with its definition:
- Term: Addend
- Term: Sum
- Term: Decompose
- Term: Make a Ten
- Term: Strategy
- Definition: A plan or method used to solve a problem.
- Definition: To break down a number into smaller parts.
- Definition: The total when two or more numbers are added together.
- Definition: Numbers being added together.
- Definition: A method of adding by creating a group of ten.
Match the terms to the correct definitions. For example: 1 - B (if you think Addend means 'To break down a number').
✏️ Part B: Fill in the Blanks
Use the words ten, easier, decompose, add, and sum to complete the paragraph.
The 'Make a _______' strategy makes addition problems _______. We _______ one of the numbers to make a group of _______ . Then we _______ the remaining amount to find the _______.
🤔 Part C: Critical Thinking
Explain in your own words why making a ten can make addition problems easier to solve. Give an example.