Question

here are the clues for a mystery number.

• the number is a decimal between 7 and 8.
• the number is closer to 8 than to 7.

which could be the mystery number?
7.19 7.90 7.39 7.09

Explanation:

Step1: Find midpoint of 7 and 8

The midpoint between 7 and 8 is $7.5$. A number closer to 8 will be greater than $7.5$.

Step2: Compare each option with 7.5

• $7.19 < 7.5$ (closer to 7)
• $7.90 > 7.5$ (closer to 8)
• $7.39 < 7.5$ (closer to 7)
• $7.09 < 7.5$ (closer to 7)

Answer:

7.90