Question

8.1 connected to a dashed rectangle, 1.80; 1.8 connected to a dashed rectangle, 0.10; 0.1 connected to a dashed rectangle, 8.10; 8.8 connected to a dashed rectangle, 8.80

Explanation:

Step1: Identify the pattern

Check the relationship between left and right numbers:

• 8.1 → 1.80: swap digits before/after decimal (8 and 1) → 1.8, add trailing zero → 1.80
• 1.8 → 0.10: swap 1 and 8 → 8.1? No, wait: 8.1 → 1.80 (reverse digits: 81→18 → 1.80); 1.8→81→01.0? No, another pattern: left number × 10 = 81, reverse →18 →1.80; left=1.8×10=18→reverse→81→0.81? No, third pattern: left number as 8.1, right is 1.80 (move decimal: 8.1→1.80 by shifting digits: 8 and 1 swap positions, add 0 at end); left=8.8: swap digits? No, 8.8×1=8.8, add trailing zero →8.80

Step2: Confirm with last example

Left=8.8, right should be 8.80 (since 8.8 has two digits, adding a trailing zero to match the right side's two decimal places as in others)

Step3: Final calculation

8.8 → add trailing zero → 8.80

Answer:

8.80