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It is known that a * b = 380, if a is expanded to 3 times of the original, then the product is (); if B is reduced to 1 / 2 of the original, then the product is ()（ It is known that a * b = 380, if a is expanded to 3 times of the original, then the product is (); if B is reduced to 1 / 2 of the original, then the product is ()（
1140 190
The two numbers are reduced to one third of the original at the same time, and the product a is expanded to nine times of the original, B is reduced to one ninth of the original, and C remains unchanged
The two numbers are reduced to one third of the original at the same time, and the product is reduced to one ninth of the original
Choose B
One factor is expanded by four times, and the other factor is reduced to one twelfth of the original. If the original product is 360, what is the current product
I'll give it to you
360×4÷12=120
RELATED INFORMATIONS
- 1. A number plus 52.2 times 52 plus itself minus 2.5% of 400 is exactly 2740. What's the number
- 2. M and N are reciprocal. The sum of the product of M and N and X is 25 / 7. What is x?
- 3. 0 × (- M) = (), m × 0 = () (- 1 / 3) × 3 / 7 = (), (- 3 / 16) × (- 16 / 9) = () (- 5) × (1 + 1 / 5) = (), X · 1 / x = () (x ≠ 0) 7 of 8 × (- 3 of 10) × 0 × (17 of 19) = () A > 0, B < 0, then AB 0 (greater or less than)
- 4. Given that the product of a's Square plus BC is 14, the product of B's Square minus 2 times BC is - 6, find the product of 3 times a's Square plus 4 times b minus 5 times BC
- 5. How much is four quarters minus one sixth? How much is three quarters plus three tenths?
- 6. How many times how many times how many is equal to how many plus how many plus how many. These six numbers are required to be the same number
- 7. What's 1 times 2 / 1 + 2 times 3 / 1. + 99 times 100 / 1? Note that 1 times 2 is the denominator~
- 8. A is a number that is not equal to 0. Please explain which of a + 3 / 5 and a multiplied by 3 / 5 has the larger result
- 9. If a and one-half B are opposite to each other, and B is not equal to 0, then the reciprocal of a is 2 c-2b D-B of A2B
- 10. If a number is multiplied by a true fraction, the product must be larger than that number______ (judge right or wrong)
- 11. The product of a number (except 0) multiplied by a true fraction () is a number. A. greater than. B. less than. C. equal to. Speed
- 12. When two numbers are multiplied, one factor is expanded by 8 times and the other factor is reduced by half, and the product is 360, then the original product is 360________ . (with explanation)
- 13. The product of the two factors is 3.45. If one factor is expanded by eight times and the other factor is reduced by one third, what is the product now?
- 14. When two numbers are multiplied, one factor is reduced by 10 times, and the other factor is increased by 20 times. Their product is the original______ Times
- 15. Given AXB = 280, if a expands 3 times and B remains unchanged, then the product is (); if B shrinks 5 times and a remains unchanged, then the product is (); if a expands 5 times and B also expands 5 times, then the product is ()
- 16. The product of two numbers is 70. One factor is expanded to 100 times of the original, and the other is reduced by one tenth. The product is 70
- 17. If the product of two factors is 80, one factor is reduced by 8 times, and the other factor remains unchanged, then the product is ()
- 18. A △ 6 / 7 = B × 6 / 5 = C × 5 / 6, where ABC is a natural number and is not zero, the three numbers of ABC are arranged in the order from small to large
- 19. Fill in the blanks 1. If seven a equals eight B equals nine C (ABC is not equal to 0), then a + B-C a + B + C equals () 2. The hour hand and minute hand form a () angle at two o'clock, and the hour hand and minute hand form a flat angle at two o'clock. Every hour, the angle that the minute hand turns is () angle. 3. It takes a quarter of an hour and a sixth of an hour to process the same kind of parts. The efficiency of the work of a and B is six pages less than () 4. Xiao Ming read a book and read a quarter of the whole book on the first day, There are still four fifths left. He should look at it from page () the next day. 5. The last step of a calculation problem should be to divide by ten, but a careless student wrongly multiplied by ten in the last step. His answer is 500. The correct answer to the original problem should be () 6, a = 2 * 3 * m, B = 3 * 5 * m (M is a natural number and M is not 0), Then M is () 7. When a bottom edge of the trapezoid is gradually shortened to a point, the trapezoid becomes () shape. When a shorter edge of the trapezoid is gradually extended to be equal to the other edge, the trapezoid becomes () shape. 8. Use 1260 square cubes with 1 cm edge length to pile up a cuboid, in which the difference between the largest and smallest surface area is () square centimeter?
- 20. It is known that a × 4 / 3 = 11 / 12 × B = 5 / 5 × C, and ABC is not equal to 0. Please arrange the three numbers of ABC in descending order and explain why they are arranged in this way