1. Prerequisite Skills VOCABULARY CHECK Copy and complete using a review word from the list; variable, variable expression, perimeter, area. ANSWER variable ANSWER area 1. A symbol that represents one or more numbers is called a(n). ? 2. The measure of the surface enclosed by a figure in a plane is its. ?

2. Prerequisite Skills SKILL CHECK Round the decimal to the nearest whole number. 3. 10.61 4. 134.7 5. 0.25 6. 12.86 ANSWER 11 ANSWER 135 ANSWER 0 13 Evaluate the expression. 7. 32 – 27 + 14 8. 4 12 6 9. 6 + 34 2 ANSWER 19 ANSWER 8 23

3. Prerequisite Skills 10. ( t – 9) + s 11. s ( t – 5) ANSWER 11 ANSWER 44 ANSWER 0 13. 3x = 39 14. x – 6 = 12 15. x + 13 = 17 ANSWER 13 ANSWER 18 ANSWER 4 Evaluate the expression when s = 4 and t = 16. Solve the equation using mental math. 1 12. 4 t – 4 SKILL CHECK