Number Sequences( Week 32 Evaluation) 1. Consecutive numbers are whole numbers that follow in order such as 2, 3, 4, 5 and 6. There are seven consecutive numbers whose sum is 168. What is the smallest number among the consecutive numbers? 2. Consecutive numbers are whole numbers that follow in order such as 2, 3, 4, 5 and 6. There are eight consecutive numbers whose sum is 276. What is the largest number among the consecutive numbers? 3. 9 consecutive whole numbers add up to 54. What is the smallest number among the 9 numbers? 4. What is the 14th term of the following sequence? 27, 19, 11, 3, -5, -13, -21, -29, ... 5. The numbers 2, 4, 6, and 8 are a set of four consecutive even numbers. Suppose the sum of 14 consecutive even numbers is 938. What is the smallest number among these 14 numbers? 6. In the following sequence of numbers, 5, 55, 555, 5555, .... What is the tens digit of the sum of the first 22 numbers of the sequence? 7. What is the 100th term in the following sequence? 1, 1.2, 1.4, 1.6, 1.8, 2, ... 8. 8n is n 8s multiplied together. What is the end digit of 8182? 9. Suppose the sum of 13 consecutive odd numbers is 377. What is the largest number among these 13 odd numbers? 10. In an arithmetic sequence, the next number in the sequence is obtained by adding a fixed number (step) to the current number. For example, a natural number sequence 1, 2, 3, ..., 10, 11, ... starts with 1 and has a step of 1. Now there is a new arithmetic sequence. Its 4th number in the sequence is 12 and its 13th number is 39. What is the 1st number in the sequence? |