A very simple arithmetic problem: 120-x = 20% X

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• 1. The arithmetic problem is very simple. I'm really too lazy to think about it Five and three quarters + three and two thirds + negative four and one fourth + negative six and one third= Five and three quarters + three and two thirds - four and one fourth - six and one third= These two formulas
• 2. A very simple arithmetic problem, -Factorization of square-4y + 4xy of X 2 (a + b) & sup2; + 20 (a + b) + 50 factorization
• 3. A roll of cloth is 140cm wide and 20m long 140 x 100 is 330 yuan 140X160 140X180 140X220 How much are they
• 4. I ask for some arithmetic problems! 50 points! Seven fifths divided by one-half divided by one eighth, twenty divided by five sixths to four times five sixths 1 divided by 7 / 9, 2 / 3 plus 1 / 2, 1 / 6 divided by 5 / 24, 36 divided by 4 / 5 Two fifths divided by eight Sevens multiplied by four fifths divided by one eighth divided by two thirds If you want to share it with me,
• 5. Please help me with the arithmetic problem There are 5 heaps of sugar, 12 in each pile. How many sugars are there in total? Do you know the answer to the question, can the formula be 5 * 12 = 60? Should the unit of the answer be one or a pile?
• 6. An arithmetic problem 7.7.9.17.34. () what to fill in the brackets? Give the algorithm, 7 + 7-5 = 9; 7 + 7 + 9-6 = 17; 7 + 7 + 9 + 17-7 = 33; it's not 34; so Add the first two - 5 Add the first three - 6 Add the first four - 7 and 7.7.9.17.34. () what do you fill in the brackets? 7+7-5=9 9+17-9=17 17+34-13=38 Can the algorithm have a better basis? Which function is 5 9 13 each time + 4. Isn't it a bit far fetched That's it. Fill in the last number The final answer is 43. I hope you can think about the algorithm
• 7. Giraffe is the tallest animal in the world. There is a giraffe 5m high, 23 higher than an elephant. Is this elephant tall?
• 8. One arithmetic problem -4.25 times 4 and 6 / 5 minus 4.25 times 6 and 6 / 1 plus 4 and 4 / 4 / 1. Simple algorithm
• 9. 4 + 3I, On the second floor, I want to see how you solve XY. I have a problem there I can't check it out
• 10. 1 / 2 ^ (n-1) = 1 detailed process of square root
• 11. Absolute simple arithmetic Isosceles right triangle waist length 10 cm, its area is () square centimeter
• 12. Work out a simple arithmetic problem How much is the factorial of 10 times 3.14, times 999, plus 123 What if it's a factorial of 100?
• 13. Arithmetic problem: the division of Medicine Two pieces of medicine, one piece is divided into three parts, a total of six parts. Now I took one part, and asked: how can I divide the remaining five parts into one of the two parts Correction: it's the amount of each of the remaining five,
• 14. What is the simple algorithm of the formula 999 × 778 × 333 × 666?
• 15. Ask a primary school arithmetic problem to use the simplest method (1+0.23+0.34)X(0.23+0,34+0.65)－(1+0.23+0.34+0.65)X(0.23+0.34)=
• 16. A simple algorithm for an arithmetic problem 1 + 1 / 6 + 1 / 12 + 1 / 20 + 1 / 30 + 1 / 42 + 1 / 56 = how much Russia
• 17. The flag has 50 pieces. Party A and Party B take turns to take the pieces. They can take five pieces at most and one at least. If they take the last one, they will win. How many pieces should Party A take first? How can they win later? How many should I take after a? How to win after that?
• 18. Ask arithmetic questions 21 ／ one third = (2-three fifths) ／ 14 / 19= 1-2 / 3 × 1 / 3 = (6 / 7 + 1 / 7) × 3 / 8= 9 / 8 × 4 / 25 = 3 / 4 × 2 / 3-1 / 4=
• 19. Ask some rational arithmetic questions ①-9÷3+（1/2-2/3）×12+3² ② The 99th power of (- 3) × (- 2) - (- 1) △ 1 / 2
• 20. Arithmetic problem! Hurry up 99 times (one minus half) times (one minus one third) times (one minus one fourth) (one minus ninety-nine one) Solve it in an hour! Hurry up!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I'm in urgent need on the first day of junior high school, or I'll be killed by chopping ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!!!!!!!!! ~~~~~~~~~~~~~~~