"An integer divided by 1 / 5 is five times larger

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• 1. How to spend money indiscriminately Spending money indiscriminately and accumulating experience for going to the society in the future
• 2. How much is seven and two fifths minus one and two thirds
• 3. Simple calculation 17 * (2 / 19-1 / 17) * 19 Simple calculation 17 * (2 / 19-1 / 17) * 19
• 4. Given a number of 10, if it is multiplied by 25, then divided by 2, then multiplied by 3.14, then multiplied by 2, then divided by 3.14! What is the final number?
• 5. 15 + [] = 51 - [] requires the same number in brackets of the same formula
• 6. The reciprocal of a number divided by 16 is ()
• 7. A few + 8 / 9 + 7 / 12 = 2
• 8. What is the number in the quotient of 1 divided by 7 Good bonus points
• 9. What is 3.9 divided by 1.9 times 6?
• 10. 9: 4 = () of 18 = () divided by 36
• 11. 956 divided by 4 minus 238 times 358 minus 258 equals 100, how to make the formula hold You can only add small outline numbers Is 956% 4-238 * 358-258 = 100
• 12. Write 1,2,3,4,5,6,7,8,9,10,11,12 to the 1999 digit in turn to form the 1999 digit. What is the remainder of this number divided by 9?
• 13. Clever calculation: (1988 + 1986 + 1984 +...) +4+2)-(1+3+…… +1985+1987)
• 14. 6.75−2.75÷[10%×(9.75−414)]．
• 15. What is the mantissa of the product of 18 * 28 *. * 98 * 108
• 16. 375 × 8 / 9 And 3.5 × 4 / 7, 18 × 2 and 1 / 9, 2 and 9 / 10 + 0.1 × 25-1 and 2 / 9
• 17. Simple calculation of 72 * 28 + 72 * 72
• 18. How many centimeters is three fifths of a meter
• 19. 8 + (- 5) times (- 8) times (- 3 / 4) Multiplication of rational numbers in the first year of junior high school
• 20. 1 / x + 1-x + 3 / x ^ 2-1 divided by x ^ 2 + 4x + 3 / x ^ 2-2x + 1, where x = - 1 / 2