I need help solving these 5 questions please!

Assume that the mathematical scores on the standardized test are normally distributed with a mean of 1500 and a standard deviation of 100. 1. What percent of students who took the test have a score above 1276? 2. What percent of students who took the test have a score below 1456? 3. What percent of students who took the test have a score in between 1300 and 1400? 4. What percent of students who took the test have a score greater than 1300? 5. If 5000 students took the test, how many scored better than 1276