How do I perform these functions without using a calculator?

In summary, there are various resources available for learning how to find square roots, cube roots, sine, cosine, e, ln, and pi without using a calculator. These include methods for computing square and cube roots by hand, using series approximations for sine, cosine, e, and ln, and numerical approximations for pi. Some unconventional methods, such as using a slide rule or crayons and a ruler, can also be used.
  • #1
Altrepair
20
0
Anyone know of books or websites that teach one how to find square roots, cube roots, sin, cosine, e, ln, pi and so forth without using a calculator because this stuff is not taught in schools, but instead is simply calculated with calculators which is not what I like considering taking things for advantage is never wise.
 
Physics news on Phys.org
  • #2
http://www.itl.nist.gov/div897/sqg/dads/HTML/squareRoot.html
That's a method of computing square roots by hand.

http://www.itl.nist.gov/div897/sqg/dads/HTML/cubeRoot.html
That's a method of computing cube roots by hand.

http://www.uconn.edu/~cdavid/latex2html/mathreview/node18.html [Broken]
Sine, cosine, e, and ln can all be approximated (albeit not with ease) using series approximations. (as well as Pi, but it's not fun)

http://en.wikipedia.org/wiki/Numerical_approximations_of_π
That's for numerical approximations of pi, have fun!
 
Last edited by a moderator:
  • #3
you could use a slide rule.
 
  • #4
cragar said:
you could use a slide rule.

Or crayons and a ruler.
 
  • #5
Phrak said:
Or crayons and a ruler.

My preferred method
 
  • #6
Right, they won't let me have sharp things like pencils.
 

1. How do I perform basic calculations without using a calculator?

To perform basic calculations without a calculator, you can use mental math strategies such as rounding, estimation, and breaking down larger numbers into smaller ones. You can also use paper and pencil to write out the calculations and solve them step by step.

2. Can I use a calculator for more complex mathematical functions?

While a calculator can be helpful for complex functions, it is not always necessary. You can use mathematical rules and formulas to solve more complex problems, or you can break down the problem into smaller, more manageable parts and solve them individually.

3. How can I improve my mental math skills?

Practicing mental math regularly can help improve your skills. You can do this by doing mental math exercises, playing math games, or even just calculating numbers in your head while doing everyday tasks. Additionally, learning and memorizing common math facts and techniques can make mental math easier.

4. Is it important to know how to perform calculations without a calculator?

While using a calculator can be convenient, it is important to have the ability to perform calculations without one. This skill can be useful in situations where a calculator is not available, or for developing critical thinking and problem-solving skills.

5. Are there any resources available to help me learn how to perform functions without a calculator?

Yes, there are many resources available to help you improve your mental math skills. You can find online tutorials, practice exercises, and even apps that can help you practice and improve your skills. Additionally, many math textbooks and workbooks include sections on mental math strategies.

Similar threads

Replies
2
Views
739
Replies
9
Views
1K
  • Calculus and Beyond Homework Help
Replies
7
Views
1K
  • Computing and Technology
Replies
25
Views
2K
Replies
1
Views
2K
  • Calculus and Beyond Homework Help
Replies
4
Views
4K
  • Calculus and Beyond Homework Help
Replies
12
Views
2K
  • Engineering and Comp Sci Homework Help
Replies
3
Views
1K
  • Quantum Interpretations and Foundations
4
Replies
105
Views
4K
  • Set Theory, Logic, Probability, Statistics
Replies
15
Views
1K
Back
Top