Math Olympiad 2( Week 26 Mid-Term Exam) 2. Below are the numbers from 0 to 9, + − and = signs made of line segments.
Please correct the following equation by adding Only one segment to the equation and write your corrected equation (only one is needed) in the blank (such as 1+2=3).
3. Below are the numbers from 0 to 9, + − and = signs made of line segments.
Please correct the following equation by adding Only one segment to the equation and write your corrected equation (only one is needed) in the blank (such as 1+2=3).
4. Below are the numbers from 0 to 9, + − and = signs made of line segments.
Please correct the following equation by adding Only one segment to the equation and write your corrected equation (only one is needed) in the blank (such as 1+2=3).
6. What is the 4th odd number after 11? 7. In the U.S. customary system, 1 pound = 16 ounce. If object A weighs 2 pound 12 ounce and object B weighs 1 pound 8 ounce , what is the weight difference between A and B (in ounce)? 8. What is the 13th even number after 10? 9. Observe the following equivalence relationships. How many footballs are equivalent to one bowling ball? 10. Observe the following equivalence relationships. How many geese are equivalent to one cow? 11. Observe the following equivalence relationships. How many boxes of juice are equivalent to one cup of coffee? 12. Observe the following equivalence relationships. How many zebras are equivalent to one lion? 13. Observe the following equivalence relationships. How many carrots are equivalent to one tomato? 14. If 4∇2 = 42 − 4 = 38 and 2∇4 = 24 − 4 = 20, what is the value of 2∇8? 15. 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 22 and digit root of 4, what is the new digit root when N is added by 4? 16. Compare the value of following column A and B:| A | B | | 2 dimes and 3 pennies. | 1 dimes and 15 pennies. |
17. Figure out the rule used to arrange the numbers, then decide what number should come next in the series.
123123123 ⇒ 18. Figure out the rule used to arrange the numbers, then decide what number should come next in the series.
35793579357935 ⇒ 20. 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 4? |