To make 1 using the numbers 1, 7, 9, and 9, we can employ basic mathematical operations like addition, subtraction, multiplication, and division.

Here’s one possible solution:

\[
(9 + 7 - 9) / 7 = 1
\]

Explanation:
1. Add 9 + 7 to get 16.
2. Subtract 9 from 16 to get 7.
3. Divide 7 by 7 to get 1.

Would you like to explore other approaches or have any further questions?

Here are 5 related questions:
1. Can you use the numbers 1, 7, 9, and 9 to make 0?
2. How can you make 2 with these same numbers?
3. Can you use all four operations to make a result of 3?
4. What if you were only allowed to use three of the four numbers—how would that change the solution?
5. Can you use exponents to get 1 with these numbers?

**Tip:** When solving number puzzles, always consider different operations like parentheses, exponents, and combinations of operations. They can unlock creative solutions!

Learn how to make the number 1 using the digits 1, 7, 9, and 9. This puzzle involves basic arithmetic operations like addition, subtraction, and division. Suitable for students in Grades 5-7, the solution uses the formula (9 + 7 - 9) / 7 = 1. Explore other related math problems and strategies.

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