Building algebraic expressions
writing a situation as an expression, sums of consecutive numbers, perimeter as an expression, evaluating expressions, word problems about ages and price changes
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Write as an expression
A two-digit number has units digit y, and its tens digit is 7 greater. Write this number.
Write as an expression
A rectangle has one side of length x and the other longer by 10. Write its perimeter.
Choose the expression that matches the description
9 times the sum of x and y.
Evaluate the expression
2x³ − 3x for x = −2
Write as an expression
Ola is x years old and Kate is 2 years older. How old will they be together in 9 years?
Evaluate the expression
−4x − 2y for x = −1/2 and y = −5
Write as an expression
The sum of 2 consecutive natural numbers, the smallest of which is x.
Choose the expression that matches the text
A number 4 greater than 9 times x.
Write as an expression
Michael collected x chestnuts and Kate 6 times as many. Kate lost 4 chestnuts, and then Michael got half of the remaining ones from Kate. How many chestnuts does Kate have now?
Write as an expression
The number x is positive. How much greater is the expression 9x + 6 than 3x − 6?
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