Find the ratio of the second number to the first number.

1.) 2, 8

2.) -3, 9

3.) 1, 1/2

4.) -5, -10

5.) 12, 4

6.) -49, 7

7.) 1/4, 1/2

8.) a², a³

9.) k-1, k

10.) 3m, 3mr

To find the ratio of the second number to the first number, you divide the second number by the first number. Let's calculate each ratio:

1. **2, 8**  
   Ratio = \( \frac{8}{2} = 4 \)

2. **-3, 9**  
   Ratio = \( \frac{9}{-3} = -3 \)

3. **1, 1/2**  
   Ratio = \( \frac{\frac{1}{2}}{1} = \frac{1}{2} \)

4. **-5, -10**  
   Ratio = \( \frac{-10}{-5} = 2 \)

5. **12, 4**  
   Ratio = \( \frac{4}{12} = \frac{1}{3} \)

6. **-49, 7**  
   Ratio = \( \frac{7}{-49} = -\frac{1}{7} \)

7. **1/4, 1/2**  
   Ratio = \( \frac{\frac{1}{2}}{\frac{1}{4}} = 2 \)

8. **a², a³**  
   Ratio = \( \frac{a^3}{a^2} = a \)

9. **k-1, k**  
   Ratio = \( \frac{k}{k-1} \)

10. **3m, 3mr**  
    Ratio = \( \frac{3mr}{3m} = r \)

Would you like further details or have any questions?

Here are 5 related questions for practice:
1. Find the ratio of 15 to 3.
2. What is the ratio of 1/3 to 2/3?
3. Calculate the ratio of -8 to -16.
4. Determine the ratio of x² to x⁴.
5. What is the ratio of 5a to 10b?

**Tip:** When calculating ratios involving variables, always simplify the expression as much as possible.

Learn how to find the ratio of the second number to the first number with detailed examples and solutions. This problem covers ratio calculation, division, and variables. Suitable for students in Grades 6-8.

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