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 91. What is the smallest number among the consecutive numbers? 3. If 10 × = 7, what is the value of 280 × ? 4. If 4m = 7, what is the value of 8m − 10? 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 100. 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 2 : 1 : 4 . The pile of coins has a total value of $16.80. How many dimes were there in the change? 8. Find the sum of the counting numbers from 89 to 114 inclusively. In other words, if S = 89 + 90 + 91 + ... + 112 + 113 + 114, find the value of S. 9. 7n is n 7s multiplied together. What is the end digit of 7194? 11. There are equal number of nickels and quarters in my pocket. The value of the nickels is $3.80 less than the value of the quarters. What is the total value of all the nickels and quarters (in dollars)? 12. Michael has 70 coins with a value of $8.70. The number of dimes is 6 times the number of nickels. The number of quarters is 6 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 11 consecutive even numbers is 462. What is the smallest number among these 11 numbers? 14. Andy has a total of 17 coins that consists nickels and quarters with a total value of $2.85. How many of them are nickels? 15. Below is a repeating decimal that the set of digits 134569 repeat after the decimal point endlessly.
0.134569 = 0.134569134569134569...
Which digit will fall in the 878th place to the right of the decimal point? |