Question

estimate: 13.85 + 5; options: 8, 19, 14, 16

Explanation:

Step1: Round 13.85

13.85 is close to 14 (since 0.85 is near 1, so 13 + 1 = 14).

Step2: Add the rounded number and 5

Now add 14 and 5: \(14 + 5 = 19\)? Wait, no, wait. Wait, 13.85 is rounded to 14? Wait, no, 13.85 is closer to 14? Wait, 13.85 + 5. Let's do the actual estimate. 13.85 is almost 14, so 14 + 5 = 19? Wait, but let's check the options. Wait, maybe I made a mistake. Wait, 13.85 + 5. Let's calculate 13 + 5 = 18, and 0.85 is almost 1, so 18 + 1 = 19? Wait, but the options are 8,19,14,16. Wait, 13.85 +5 = 18.85, which is close to 19. So the estimate is 19.

Wait, maybe the first step: 13.85 is approximately 14? Wait, 13.85 is 13 and 85 hundredths. So when adding 5, 13 +5 =18, 0.85 +0=0.85, so total is 18.85, which is close to 19. So the estimated value is 19.

Answer:

19 (corresponding to the option with 19)