https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:intro-variables/v/variables-and-expressions-1 2023-06-11T20:09:24.00592199Z Evaluating an expression with one variable In this math lesson, we explore the expression 5 t plus 3 to calculate the cost of participating in a hospital raffle fundraiser. By evaluating the expression for different values of t, the number of tickets purchased, we find the costs for buying 1, 8, and 10 tickets, which are 8, 43, and 53 dollars, respectively. Sal Khan video https://cdn.kastatic.org/googleusercontent/uIAXUtdyJRfQMcSwOvbNBBbvYyFxGpIsznKE9aM5HHsUTWfdzOTNmL_BQHea9f9oD_NaMb5EtADwbhHP-x3Orao Evaluating an expression with one variable In this math lesson, we explore the expression 5 t plus 3 to calculate the cost of participating in a hospital raffle fundraiser. By evaluating the expression for different values of t, the number of tickets purchased, we find the costs for buying 1, 8, and 10 tickets, which are 8, 43, and 53 dollars, respectively. https://cdn.kastatic.org/ka-youtube-converted/AJNDeVt9UOo.mp4/AJNDeVt9UOo.mp4 120 Substitution and evaluating expressions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:intro-variables/e/evaluating_expressions_1 2025-03-28T07:05:36.573142233Z Evaluating expressions with one variable Substitute a whole number into an expression with 1 or 2 operations (addition, subtraction, multiplication, and division), and evaluate. Marcia Lee exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:intro-variables/a/evaluating-expressions-with-one-variable 2025-07-31T12:20:10.472160424Z Evaluating expressions with one variable A mixture of explanations, examples, and practice problems to have you evaluating expressions with one variable in no time! article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:substitute-evaluate-expression/v/evaluating-expressions-in-two-variables 2023-05-23T10:28:13.689545116Z Evaluating expressions with two variables Evaluating expressions with multiple variables involves substituting given values for each variable and simplifying the expression. By replacing variables with their corresponding values, we can easily compute the result of expressions, even for more complex examples with multiple terms and operations. Sal Khan video https://cdn.kastatic.org/googleusercontent/iq0X7eHKRMR7hfRc9mv4FyGygVfST6BBHqCNP68H6jRMR_bZ7vvnI1IxdP9ixbNILdvxF4YpfpS7SiGx7vtfzQSx Evaluating expressions with two variables Evaluating expressions with multiple variables involves substituting given values for each variable and simplifying the expression. By replacing variables with their corresponding values, we can easily compute the result of expressions, even for more complex examples with multiple terms and operations. https://cdn.kastatic.org/ka-youtube-converted/S_OX3ByvBSc.mp4/S_OX3ByvBSc.mp4 125 Substitution and evaluating expressions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:substitute-evaluate-expression/e/evaluating_expressions_2 2026-04-02T16:00:53.810662107Z Evaluating expressions with multiple variables Practice evaluating expressions in two variables by plugging in values for the variables.  Omar Rizwan exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:substitute-evaluate-expression/a/evaluating-expressions-with-two-variables 2021-06-30T17:51:08Z Evaluating expressions with two variables We've already evaluated expressions with one variable. Now it's time to do it with two variables. article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:substitute-evaluate-expression/v/evaluating-expressions-in-two-variables-with-decimals-and-fractions 2023-05-24T15:30:27.32390848Z Evaluating expressions with two variables: fractions & decimals Evaluating expressions with two variables involves substituting the given values for each variable and simplifying the expression. By practicing with examples, we can improve our skills in solving these types of problems, ultimately enhancing our understanding of algebraic expressions and their real-world applications. video https://cdn.kastatic.org/googleusercontent/iWah1gLLRs99FymEfXfnlNID8vYrdrgj5_-fMsHrhiqkLFKMA-ZP-W9iytRuEMtkpGMKwyYOVrWqSscxaWsfl9nzGQ Evaluating expressions with two variables: fractions & decimals Evaluating expressions with two variables involves substituting the given values for each variable and simplifying the expression. By practicing with examples, we can improve our skills in solving these types of problems, ultimately enhancing our understanding of algebraic expressions and their real-world applications. https://cdn.kastatic.org/ka-youtube-converted/GmD7Czmol0k.mp4/GmD7Czmol0k.mp4 207 Substitution and evaluating expressions https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:substitute-evaluate-expression/a/evaluating-expressions-with-two-variables-with-fractions-and-decimals 2021-06-30T17:51:06Z Evaluating expressions with two variables: fractions & decimals We've already evaluated expressions with two variables. Now it's time to do it with fractions and decimals. article