   Variables
 1) If each match box contains 50 matchsticks, the number of matchsticks required to fill n such boxes is 50n 50Ã·n 50 – n 50 + n

 2) In algebra, the variable letters may stand for Known quantities None of these Fixed numbers Unknown quantities

 3) Variable means that it ____________________. can take different values. has a fixed value. can take only 2 values. can take only three values.

 4) In algebra, a × b means ab, but in arithmetic 3 × 5 is 35 53 15 8

 5) Hannah has b books. Davina has 70 more books than Hannah. Choose the expression that shows how many books Davina has. 70 b – 70 b + 70 b

 6) Josephine has g gumballs. Geneva has 15 fewer gumballs than Josephine. Choose the expression that shows how many gumballs Geneva has. 15 - g g + 15 g – 15 g

 7) Solve 19 × j = 722 , j=

 8) Using u = 3 and v = 2, the value of the expression u × 3 + 3 + v =

 9) For t = 7, the value of the expression t × 1.3=

 10) : A teacher distribute 15 pencils per student , how many pencils are needed for ‘y’ students: 15-y 15+y 15/y 15y

 11) : A teacher distribute 15 pencils per student , how many pencils are needed for ‘y’ students: 15-y 15+y 15/y 15y

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