CHAPTER Ratios, Rates, and Proportional Reasoning

Name: _____________________________________________________Date: ______________part-to-whole ratio● compares 1 part of a group to the whole group● example:2 : 6 compares white tiles to the group of tilesb) Compare the number of white marbles to the total number of marbles.Write the part-to-whole ratio as a fraction in lowest terms.SolutionThere are white marbles out of a total of marbles.Write a part-to-whole ratio as a fraction: white is4total 20Write the fraction in lowest terms.÷ 44=20 5Divide the numerator andthe denominator by thesame number.÷ 4c) What marbles show the ratio 6 : 10?SolutionThere are grey marbles and black marbles.grey : black is :3-term ratio● compares 3 quantities with the same units● write as a : b : c or a to b to c● example: black : white : grey is 10 : 4 : 6d) Write the 3-term ratio comparing the white, grey, and black marbles.Solutionwhite : grey : black = : :To write this ratio inlowest terms, divideeach number by 2.= 2 : : 52.1 Two-Term and Three-Term Ratios ● MHR 59