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 343. 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 428. What is the largest number among the consecutive numbers? 3. 5 consecutive whole numbers add up to 55. What is the smallest number among the 5 numbers? 4. What is the 10th term of the following sequence? 24, 18, 12, 6, 0, -6, -12, -18, ... 5. The numbers 2, 4, 6, and 8 are a set of four consecutive even numbers. Suppose the sum of 6 consecutive even numbers is 222. What is the smallest number among these 6 numbers? 6. In the following sequence of numbers, 2, 22, 222, 2222, .... What is the tens digit of the sum of the first 29 numbers of the sequence? 7. What is the 80th term in the following sequence? 0.7, 1.4, 2.1, 2.8, 3.5, 4.2, ... 8. 8n is n 8s multiplied together. What is the end digit of 8158? 9. Suppose the sum of 10 consecutive odd numbers is 260. What is the largest number among these 10 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 19 and its 9th number is 44. What is the 1st number in the sequence? |