Use a formula problem solving strategy
Asked by maham237 @ in Mathematics viewed by 315 People
Use Polya's four-step problem-solving strategy and the problem-solving procedures presented in this lesson to solve the following exercise. Find the following sums without using a calculator or a formula. Hint: Apply the procedure used by Gauss. (See the Math Matters on page 31.) (a) 1 + 2 + 3 + 4 + . . . + 396 + 397 + 398 + 399(b) 1 + 2 + 3 + 4 + . . . + 546 + 547 + 548 + 549
(c) 2 + 4 + 6 + 8 + . . . + 72 + 74 + 76 + 78