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 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
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 Equations of a straight line Parallel, coincident and intersecting lines Distances Angles in space Inner product

 Multiply three or more numbers: word problems A fast food chain uses plastic straws. The straws come in 6 different colors. Each package contains 8 straws in each color. How many plastic straws are there in 5 packages? Multiply the numbers in the story to find the total number of plastic straws. 6 × 8 × 5 = 240 There are 240 plastic straws. The students at Kim Cuc's school are keeping journals. They have 6 journal-writing sessions per week. Each student writes 6 pages in each session. How many journal pages will each student write in 6 weeks?