Cube Root by Estimation Method
Cube Root by Estimation Method
We can estimate cube roots of the given number with the help of the following table:
| x | x | x | x | x | |||||
| 1 | 1 | 9 | 2.080 | 17 | 2.571 | 25 | 2.924 | 33 | 3.208 |
| 2 |
1.260 |
10 | 2.154 | 18 | 2.621 | 26 | 2.962 | 34 | 3.240 |
| 3 | 1.442 | 11 | 2.224 | 19 | 2.668 | 27 | 3.000 | 35 | 3.271 |
| 4 | 1.587 | 12 | 2.289 | 20 | 2.714 | 28 | 3.037 | 36 | 3.302 |
| 5 |
1.710 |
13 | 2.351 | 21 | 2.759 | 29 | 3.072 | 37 | 3.332 |
| 6 | 1.817 | 14 | 2.410 | 22 | 2.802 | 30 | 3.107 | 38 | 3.362 |
| 7 | 1.913 | 15 | 2.466 | 23 | 2.844 | 31 | 3.141 | 39 | 3.391 |
| 8 | 2.000 | 16 | 2.520 | 24 | 2.884 | 32 | 3.175 | 40 | 3.420 |
Illustration: Using the table, estimate the cube root of 39.
Solution: In , the value of x is 39.The number against 39,under the column
is 3.391
Hence = 3.391
Using the table, estimate the cube root of 15 and find the digit just after the decimal. | |||
| Right Option : C | |||
| View Explanation | |||
| |||
| Right Option : B | |||
| View Explanation | |||
Find the digit from extreme right in decimal part while finding the cube root of 21 using table. | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
