Or can we as a class find every number between 1 and 20 using only four 4’s and any operation Here’s an example √4 + √4 + 4⁄4 = give this challenge to students and write all the numbers from 1 to 20 on the board. Can you solve the four four's puzzle by finding every number between 1 and 20 using only four of the number 4 and any mathematical operation. Use exactly four 4s to form every integer from 0 to 50, using only the operators. I am doing the same thing. I only have answers with the square root thing on it sorry! Maybe you will be allowed it though :S 0 = (4 + 4) - (4 + 4) 1 = (4 + 4) / (4 + 4) 2 = (4 x 4 ) / (4 + 4) 3 = (4 + 4 + 4) / 4 4 = 4 + 4 - √4 - √4 5 = √4 + √4 + {4/4} 6 = 4 + √4 + 4 - 4 7 = 4 x √4 - {4/4} 8 = 4 + 4 + 4 - 4 9 = 4 + 4 + {4/4} 10 = 4 + 4 + 4 - √4 11 = 4 / {√4 - (4/4)} 12 = {4 x 4. The image shows a table with numbers from 1 to 20 in the right column and empty spaces in the left column
The table is labeled the four fours problem and the instructions are to write each number from 1 to 20 using only the number 4 four times and any mathematical operations We need to find a combination of four 4s and mathematical operations that result in each. The problem it has been proposed that all whole numbers to infinity can be represented by four 4s and different operations Explore how this can be done for the numbers 1 to 20.
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