Number Thinking( Week 45 Evaluation) 2. All the numbers are from 1 to 6 and each number is only allowed to be used once. Fill in the blanks with remaining numbers within the range so that the sums of the three numbers in each side are the same.
3. Find 2 positive integers that have the same result when multiplied together as when added together. Type the numbers separated with a comma. 4. What is the multiple of 2 between 100 and 199 inclusively with the largest digits sum? 5. Fill in the blanks with the numbers 2, 3, 4, 7 to make both the sum of the three numbers in a row and the sum of the three numbers in a column to be 13, and also make sure that the number filled in the leftest blank is less than or equal to the number filled in the rightest blank.
6. The product of two natural numbers is 16. What is the smallest possible sum of the two natural numbers? 7. There are 110 buildings in a community. New sign markers are ordered to number the buildings from 1 to 110. How many 9's will be needed? 8. What is the one's digit for the product of 3 × 4 × 5 × 6 × 7 × 8 × 9 × 10? 10. Using all the numbers of 6, 7, 9, 12, 13 and +, −, −, × operators only once, can an even number and an odd number be produced respectfully? |