Algebraic expressions
Answers are for parents and teachers.
1
Find the value of 7p - q² at p = 2, q = -3.
5
2
A square has side a cm. Write its perimeter and area as expressions.
Perimeter 4a cm, area a² cm².
3
A notebook costs 600 soums and a pen 1500 soums. Write the cost of m notebooks and k pens as an expression and evaluate it for m = 4, k = 2.
600m + 1500k = 5400
4
Find the value of (4c - 2d) : (c + d) at c = 5, d = 1.
3