Math Olympiad 5( Week 36 Quiz 7) 2. 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 392. What is the smallest number among the consecutive numbers? 3. If 6 × = 3, what is the value of 135 × ? 4. If 5m = 8, what is the value of 10m − 5? 5. How many two-digit numbers are there in which the tens digit is greater than the ones digit? 6. 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 412. What is the largest number among the consecutive numbers? 7. A pile of coins is consists of nickels, dimes and quarters. The ratio of nickels, dimes and quarters is 1 : 3 : 2 . The pile of coins has a total value of $5.10. How many dimes were there in the change? 8. Find the sum of the counting numbers from 39 to 69 inclusively. In other words, if S = 39 + 40 + 41 + ... + 67 + 68 + 69, find the value of S. 9. 7n is n 7s multiplied together. What is the end digit of 7132? 11. There are equal number of nickels and quarters in my pocket. The value of the nickels is $2.80 less than the value of the quarters. What is the total value of all the nickels and quarters (in dollars)? 12. Josh has 107 coins with a value of $13.15. The number of dimes is 4 times the number of nickels. The number of quarters is 5 more than the number of nickels. How many quarters does he have? 13. The numbers 2, 4, 6, and 8 are a set of four consecutive even numbers. Suppose the sum of 5 consecutive even numbers is 270. What is the smallest number among these 5 numbers? 14. Eric has a total of 18 coins that consists nickels and quarters with a total value of $3.10. How many of them are nickels? 15. Below is a repeating decimal that the set of digits 68012 repeat after the decimal point endlessly.
0.68012 = 0.680126801268012...
Which digit will fall in the 887th place to the right of the decimal point? |