Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
The digit sequence 123456789
Author:
spkwan
Topic:
Arithmetic
Insert plus/minus sign(s) in between the digit sequence yielding an arithmetic expression equal/closest to ...
GeoGebra
Reference 1: cut-the-knot
https://www.cut-the-knot.org/do_you_know/digits.shtml
Reference 2: world of numbers
http://www.worldofnumbers.com/ninedig1.htm
Reference 3: nrich
https://nrich.maths.org/1013
New Resources
Taylor Polynomial
Monkey typing Shakespeare's complete works
Cube of a Binomial - Volume Model
Shade a spheric triangle with "surface".
What is an Isogonal Conjugate?
Discover Resources
Square with diagonals
Standing waves (free end reflection)
Plano Coordenado 3
TringleAngle Sum
MODULE 5
Discover Topics
Interest Calculation
Linear Programming or Linear Optimization
Square
Terms
Linear Equations