4 out of 15 + 1 out of 3=

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• 1. Simple calculation: 1. 5 / 7 times 14 / 25 plus 1 / 3 Simple calculation of 1.90 minus 90 times 2 / 15 17 × 2 / 9 × 51 / 2 times 2 / 9 3.42 × (19 / 14-8 / 21) simple calculation Who can write which,
• 2. As simple as possible: 63 * three fifths + 36 * 0.6 + three fifths
• 3. Thirty fifths of a number is six fifths of 36
• 4. The greatest common factor and the least common multiple of 57 and 385
• 5. What are the greatest common factor and the least common multiple of 10 and 45
• 6. Greatest common factor, least common multiple of 8 9 10
• 7. 38 and 95 19 and 76 15, 8 and 30 36, 18 and 4 solve equations. 120-156x=40 15x-36=48 1.2×6+0.8x=120 There must be a process to solve the equation!
• 8. How to find the least common multiple of three numbers by short division For example, 3.4.8 Short division Format: |3.4.8 -----
• 9. Finding the least common multiple of three numbers by short division For example: how to use short division to find the least common multiple of 3, 6 and 9
• 10. How to find the least common multiple of three numbers by short division? There are: 18 24 42 25 20 8 12 15
• 11. How many hours is 3:15? How to calculate it? Write it down
• 12. -1080 + 950 degrees 15 '= how much to calculate the process in detail, another 950 degrees 15 seconds how to calculate, urgent!
• 13. 3.27 ° * 15 = I want to calculate the process
• 14. 7 + 8 = 15 (I want to calculate the process)
• 15. If the remainder of an angle is half of the complement of the angle, which is less than 4 degrees, then what is the remainder of the angle? What are you doing tonight
• 16. If angle a = 42 degrees and 31 minutes, then the complement of the remainder of angle a is
• 17. The remainder of an angle is half of the complement of the angle, 42 degrees less There are some 4% salt water, which evaporates some water and turns into 10% salt water. Then 300 g of 4% salt water is added to mix or turn into 6.4% salt water. Ask about the quality of salt water initially added Find the time between 5 o'clock and 6 o'clock when the hour hand and minute hand are in a straight line For a five digit number, if the number in the first digit is moved to the last digit, a new five digit number can be obtained (for example, this transformation can get 3214 from 4321), the new five digit number is 11106 smaller than the original number, and the original five digit number can be obtained Set up the unknown number and list the equation
• 18. Given that the complement of the remainder of an angle is 4 / 5 of the complement of the angle, find the degree of the angle
• 19. Given the angle a = 36 degrees, 42 minutes and 15 seconds, the angle a, the degrees of its complement and remainder A-dime, not a job
• 20. The remainder of an angle is 42 degrees 37 ', and the degree of the complement of this angle is 42 degrees 37'