3. 264 - 60 + 1 900 + 99 + 1 700 - 1 - 600 400 - 1 - 300

This question presents two arithmetic problems. I will solve each one: Problem 1: 264 - 60 + 1 1. First, calculate 264 - 60: 264 - 60 ----- 204 2. Next, add 1 to the result: 204 + 1 = 205 Problem 2: 900 + 99 + 1 1. First, calculate 900 + 99: 900 + 99 ----- 999 2. Next, add 1 to the result: 999 + 1 = 1000 Problem 3: 700 - 1 - 600 1. First, calculate 700 - 1: 700 - 1 = 699 2. Next, subtract 600 from the result: 699 - 600 = 99 Problem 4: 400 - 1 - 300 1. First, calculate 400 - 1: 400 - 1 = 399 2. Next, subtract 300 from the result: 399 - 300 = 99

Ответ: 205, 1000, 99, 99