Math Olympiad 2( Week 10 Quiz 2) 3. Jackson has 6 pennies and 4 nickels. How many cents does Jackson have in total? 4. Compare the two things and decide if one is bigger than the other or if they are equal.
| I | 4 quarters. | | II | 18 nickels. |
(Note that 1 quarter = 5 nickels). 5. What is the 18th even number after 2? 6. The digit root is the repeated digit sum. For example, the digit root of 87 is 8 + 7 = 15 → 1 + 5 = 6. Number N has a value of 42 and digit root of 6, what is the new digit root when N is added by 3? 7. What is the 3rd odd number before 38? 8. The digit root is the repeated digit sum. For example, the digit root of 87 is 8 + 7 = 15 → 1 + 5 = 6. What is the largest two-digit number with a digit root of 9? 9. The digit root is the repeated digit sum. For example, the digit root of 87 is 8 + 7 = 15 → 1 + 5 = 6. Number N has a value of 18 and digit root of 9, what is the new digit root when N is added by 7? 11. Tom wants to buy a snack bar for 78 cents. He has 2 quarters, 2 dimes and 2 nickels. Does he have enough money?
Note that 1 quarter = 25 cents, 1 dime =10 cents, 1 nickel = 5 cents, 1 penny = 1 cent. 12. Josh bought a toy for $20 and a candy bar for $3. How much money (in dollars) did he spend in total? 13. George wants to buy a notebook of 47 cents. If he pays with 1 quarter and 3 dimes, how many cent(s) will he get back for change? 14. Jackson lost 10 lb, and Niconia lost 6 lb during this year. If they have the same weight now, who was lighter one year ago? 15. George gained 8 lb, and Julia lost 4 lb during this year. If they have the same weight now, who was lighter one year ago? |