A simple way to calculate 125 times 2.5 times 31 plus 125 times 2.5

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• 1. (0.125 + 12.5-1.25) * 16 simple operation
• 2. How can 1 2 3 4 5 6 7 be equal to 28
• 3. Calculation (- 3 / 2) - (- 5 / 4) - (+ 7 / 2) - (21 / 4) + (9 / 4) There should be a calculation process
• 4. Let the domain of F (x + 1) be (1,2). It is urgent to find the domain of F (x)
• 5. Calculated by formula; 28.7-6.8x5 △ 34 + 12.3
• 6. Calculation: one and a quarter - 9 / 20 + 11 / 30-13 / 42 + 15 / 56-17 / 72 + 19 / 90
• 7. Calculation with recurrence equation -- ① 1 + 2 +... + 19 + 21 ② 2 + 4 +... + 68 + 70
• 8. How simple is 35 * 14-70 + 30?
• 9. Forty three eighths equals thirteen and sixty
• 10. )=0.35=21:( )=( )÷80
• 11. What is 1.5 divided by 1.0 times 10
• 12. The sum of two numbers is equal to the product of two numbers. What's the rule? I'm in a hurry
• 13. Let n denote a positive integer. Let n be equal to the sum of the two numbers
• 14. If the algebraic formula 3 times the square of x minus 4 times x plus 6 equals 9, then four thirds of the square of X + 6 equals 9
• 15. In a times b (a > 0, b > 0), when B () 1, the product is equal to a, when B (), the product is > A, when B (), the product is < a,
• 16. The product of two multipliers is 380. One multiplies 10, and the other divides by 10. The product is ()
• 17. The product of a / 1 and B / 1 is 1. When a equals 6, B = ()
• 18. If the maximum factor of a is 17 and the minimum multiple of B is 1, how many factors are there in the product of a multiplied by B
• 19. One factor multiplied by a, the other factor divided by B, product ()
• 20. Given 10 ^ a = 2, 10 ^ B = 3. Find 100 ^ (2a-b)