Which out of the following are expressions with numbers only? (a) `y + 3` (b) `(7 xx 20) - 8 z ` (c) `5 (21 - 7 ) + xx 2 ` (d) `5 ` (e) `3 x ` (f) `5 - 5 n ` (g) `(7 xx 20 ) - (5 xx 10 ) - 45 + p`

Which of the following are expression with numbers only? (7xx20)-8z

Which out of the following are expressions with numbers only? 7 xx 20 - 8z .

Which out of the following are expressions with numbers only? 5(21-7)+7 xx 2

Which out of the following are expressions with numbers only? (a) y + 3 (b) (7 xx 20) – 82 (c) 5 (21 - 7) + 7 xx 2 (d) 5 (e) 3x (f) 5-5n (g) (7 xx 20) - (5 xx 10) - 45+ p

Which out of the following are expressions with numbers only? 7 xx 20 - 5 xx 10 - 45 + p .

Which out of the following are expressions with numbers only? (g) (7×20)-(5×10)-45+p

Which of the following are expression with numbers only? (7xx20)-(5xx10)-45+p

Simplify the following expressions : 9/7 xx 21/6 xx 5/8 xx 3 5/6

Multiply and express as a mixed fraction : (a) 3 xx 5 1/5 (b) 5 xx 6 3/4 (c) 7 xx 2 1/4 (d) 4 xx 6 1/3 (e) 3 1/4 xx 6 (f) 3 2/3 xx 8

State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable . (a) 17 = x + 7 (b) (t - 7 ) > 5 (c) 4/2 = 2 (d) (7 xx 3) -19 = 8 (e) 5 xx 4 - 8 = 2 x (f) x - = 0 (g) 2 m 24 (n) 20 = (10 - 5) = 3 xx 5 (o) 7 - x = 5