Number Thinking(1)( Week 23 Evaluation) 1. All the numbers are from 9 to 14 and each number is only allowed to be used once. Fill in the blanks with the remaining numbers within the range so that the sums of the three numbers in each side are the same.
2. What is the square root of 9? 3. What is the smallest prime number such that of the prime is larger than 6? 4. What is the greatest common factor (GCF) of 28 and 35? 5. A and B are two different natural numbers that are less than 28. What is the largest value that can have? 6. Two natural numbers have a sum of 28. What is the maximum product of the two numbers? 7. Find 7 positive integers that has the same result when multiplied together as when added together. Type the numbers separated with commas. 8. If m and n are positive integers and 5m + 3n = 27, what is the sum of all possible values of m? 9. A digital clock shows time in digits with accuracy to seconds, for example 10:28:32. If you sum the digits of the displayed time every second from 05:00:00 to 05:20:00, what is the largest difference between any two sums? 10. What is the largest three-digit number that is divisible by both 5 and 6? |