  • Matrices
• Algebra
• Geometry
• Graphs and functions
• Trigonometry
• Coordinate geometry
• Combinatorics
 Suma y resta Producto por escalar Producto Inversa
 Monomials Polynomials Special products Equations Quadratic equations Radical expressions Systems of equations Sequences and series Inner product Exponential equations Matrices Determinants Inverse of a matrix Logarithmic equations Systems of 3 variables equations
 2-D Shapes Areas Pythagorean Theorem Distances
 Graphs Definition of slope Positive or negative slope Determine slope of a line Equation of a line Equation of a line (from graph) Quadratic function Parallel, coincident and intersecting lines Asymptotes Limits Distances Continuity and discontinuities
 Sine Cosine Tangent Cosecant Secant Cotangent Trigonometric identities Law of cosines Law of sines
 Equations of a straight line Parallel, coincident and intersecting lines Distances Angles in space Inner product

Word problems involving rational numbers

Five pieces of satin were cut from one bale of satin. They were 1/2 m, 9/2 m, 3/10 m, 29/10 m, and 101/20 m long. Find their total length.

Their total length is:

From a chain 11 m long, two pieces of lengths m and are cut off. What is the length of the remaining chain?

Solution:
Original length of chain = 11 m

 Sum of lengths of pieces cut off:

 Length of piece left: