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Anonymous users2024-02-091. Recursive equation calculation:
2. Text Questions:
1) The number A is 160, and the number B is 20 less than 4 times the number of A, what is the number B?
B number = 4 160-20 = 240-20 = 220;
2) The number A is 160, which is 20 less than 4 times the number of B, what is the number B?
B number = (160 + 40) 4 = 200 4 = 50;
3) The number A is 32, which is exactly half of the number B, what is the difference between the two numbers?
B number = 2 32 = 64;
Difference = 64-32 = 32;
4) The number B is 238, which is 4 times more than the number of A 18, find the number of A.
A number = (238-18) 4 = 220 4 = 55;
5) How much less is the quotient of 16 divided by 128 than their sum?
3. Application Questions:
1. A passenger car and a sedan traveled in the opposite direction from two stations 1080 kilometers apart at the same time, and the two cars met 6 hours later. How many kilometers per hour does a passenger car travel 80 kilometers per hour, but how many kilometers per hour does a car travel?
Car speed = 1080 6-80 = 180-80 = 100 km h;
2. The hypermarket shipped 50 boxes of apples and watermelons, 15 kilograms of apples per box and 25 kilograms of watermelons per box, how many kilograms of this batch of fruits are there? How many kilograms more watermelon than apples?
total = 15 50 + 25 50 = 50 40 = 2000 kg;
more = 25 50-15 50 = 10 50 = 500 kg;
3. There are 136 literary books in the school library, the science and technology books are twice as many as the literary books, and the story books are 70 times less than the three times the literary books, how many story books are there?
Science and technology books = 2 136 = 272 books;
Storybooks = 3 136-70 = 408-70 = 338 books;
4. The school carried out tree planting activities, 56 trees were planted in the fourth grade, 6 more than twice that of the third grade, how many trees were planted in the third grade?
3rd grade = (56-6) 2 = 50 2 = 25 trees.
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Anonymous users2024-02-08How to calculate recursive equation calculation!
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Anonymous users2024-02-071.Calculated with a recursive equation ...
1) Three-quarters Three-quarters + three-quarters four-thirds = 9 16 + 9 16
1 and 1 82) [11 (1/4 + 2/3)] 11/8 = [11 11 12] 11 8
2.Three-tenths: one-half = (:3
3.Factoring 546 into prime factors is (546=2 3 7 13).
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Anonymous users2024-02-06The formula for summing a series of equal differences.
sn=n(a1+an)/2
1+2+3+..1997=1997x(1+1997)÷21/1998+2/1998+……1997/1998=1997x1998÷2÷1998=1997÷2=
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