HINTS ^= power Therefore 4^SQRT4 = 4 2 =16 ! = factorial Therefore 4!= 4x3x2x1. 24 = 4*4 + 4 + 4. - 4) + 4/4. . To do so, you will need to use more than just the four symbols listed above. Make all numbers 10-20. 22 = 4*4 + 4 + sqrt 4. (, " i% %"^& (® (:&'(" !=dc!6 ¸ ¸ `&'j $ ¸ ¸ %"'- &, &% -± + 4 -4+4 1 44 ÷44 27 4 2 4 4 … We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. ANSWERS to Sunny's Four 4's Challenge Here are all the solutions to Sunny's Four 4's Challenge If you find any errors, please let us know! Must be willing to work long hours and have a good work ethic. + 4 - 4/4 ! Soon after setting the challenge the board area becomes full of students putting up their solutions, then returning to their seat to look for more. 26 = 4! I have only had a few students get anywhere near completing the worksheet. It has worked well when a table of students have collaborated on the task. I have included a menu driven PowerPoint with an answer for each number (0-100). A mathematical puzzle, where you aim to find an equation to match a given solution, using only four fours and a small set of operators. !! + (4+4)/4. For students, it … Including every possible answer for each number would probably be impossible. Note that variations of the problem allow 'free' squaring (eg: 4^2 uses only one 4). Tailored answer: “I’m dependable and detail-oriented. Don’t forget your parenthesis! Four fours 0 44 - 44 26 4! 25 = (4 + 4/4)^sqrt4 .....ie 5^2. This week’s puzzle was given to us by a maths teacher who used to set it as a revision exercise. Jo has used this task with a lot of success on the first days of school with very hesitant students. 2z& ", &? The problem is to make a series of equations containing four fours and any number of common mathematical symbols. For example, 4 + 4 + 4 + 4 = 16. In this case those five 4 solutions that use sqrt(4) in the rules used here become solutions with four or less fours. - sqrt4 + 4/4. A list of contributed answers (solutions above 99) to the Four Fours problem - there are some gaps. For example, 163 = (4^2+4^2+.4'^2)/.4'^2 uses only four 4's but eight if the 2's are replaced by sqrt(4) as required here. 21 = (4! Initially, students will use the more familiar operations, +, −, ×, ÷, along with brackets to create their equations. (scroll to the bottom to see the answers) Extra Challenge. Entry level – Machine Operator Job description: Construction company looking to hire a machine operator. Four fours is a mathematical puzzle.The goal of four fours is to find the simplest mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit four (no other digit is allowed). /=d-." Then, by placing one equation symbol (x – + ÷) between each of the fours, get a total of all numbers 0 through 9. 23 = 4! &? For example, (4 × 4 + 4) ÷ 4 = 5. = double factorial 27 = 4! The lesson activity requires students to use up to four fours and any operation to make the numbers from 0 to 100. The Four 4's Challenge. . as far as you can go. Answers. The Four 4’s. Most versions of four fours require that each expression have exactly four fours, but some variations require that each expression have the minimum number of fours. Four Fours The goal of four fours is to find the simplest mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit four (no other digits permitted). Analysis of desired qualities/characteristics: This company needs someone who is going to be reliable and can work hard for extended periods of time. The first equation must total one, the second equation must total two, and so on . 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