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Exercises on the distribution law of multiplication in the first grade of junior high school
Take a look here (especially the second one)
Using letters to express the law of combination of multiplication___ On the distribution law of representation multiplication___ ．
(1) The law of combination of multiplication is written in letters: (a × b) × C = a × (B × C); (2) the law of distribution of multiplication is written in letters: (a + b) × C = a × C + B × C; so the answer is: (a × b) × C = a × (B × C); (a + b) × C = a × C + B × C
How to express the law of distribution by multiplication in letters
It can be expressed by letters: (a + b) x C = AXC + bxc. There is another expression: ax (B + C) = AXB + AXC
RELATED INFORMATIONS
- 1. 76 × 103 =? Calculation by multiplication distribution law
- 2. What is 99.9.9.9.9 times 8.888.8.88?
- 3. Master Wang plans to produce a batch of parts in 30 days. In fact, he produces 60 more parts per day than planned. In this way, he completes the task five days ahead of schedule. How many parts are there?
- 4. Five workers processed 735 parts and 135 parts in two days. It is known that one of the two workers asked for leave for one day. According to the work efficiency, if no one asked for leave in the next few days, how many days will it take to complete the task?
- 5. 12-36 + 58 is equal to?
- 6. What's 32 times two?
- 7. 16 out of 30 is 2 out of 15
- 8. The area of a trapezoid is 50 square decimeters, the sum of its top and bottom is 16 meters, and its height is 10 meters______ ．
- 9. 3/2+13/6+37/12+81/20+151/30+253/42+393/56 Simple operation That's all I have left
- 10. Calculate 1 × 2 + 23 + 34 + 45 + 56 + +99100 results
- 11. A question about the law of multiplication and distribution in grade two of primary school? a*b+a*c=a(b+c) 38*99+38 =38*(99+1) =38*100 =3800 Isn't a question like this supposed to be the inverse operation of the law of distribution by multiplication? Why is it that the book a * B + A * C = a (B + C) written in primary school as the law of distribution by multiplication, which is a little confused Is a (B + C) = a * B + A * C also the law of multiplicative distribution? Is that the same thing? Ah No, it's the law of association of multiplication again. The law of association in my memory is (a × b) × C = a × (B × C). Is that right?
- 12. How many square meters are there per mu
- 13. Love science + love science + love science = 777 ask love = how many, subject = how many, study = how many
- 14. 3 + 1 + 2 + 4 + 5 equals
- 15. One in two is equal to three in four
- 16. How long is one foot, three feet and one foot?
- 17. How many meters is ancient Yizhang now
- 18. One inch = () cm? One foot = () cm? One foot = () cm?
- 19. How many meters was one foot in ancient times?
- 20. If one tree is planted on both sides of a road every 3 m, there are still three trees left. If only one tree is planted every 2.5 m, there are 77 trees missing. How long is the road Solve by equation