関連ワード:  what is the meaning of rate in math    what is the meaning of rate in math with example    what is the meaning of cost in mathematics    what is the meaning of unit rate in math    what is the meaning of interest rate in math    what is the meaning of commission rate in math    what is the meaning of discount rate in math    what is the meaning of rate of change in math    what is the meaning of selling price in math    what is the meaning of sale price in math