10 questions · Form 1 Mathematics Bab 5: Algebraic Expressions
10 questions · plays in fullscreen
Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.
1. In the term -8xy, what is the coefficient of xy?
Answer: A
In -8xy, the numerical coefficient multiplying the variables xy is -8.
2. Express the phrase '5 more than twice a number x' as an algebraic expression.
Answer: A
'Twice a number x' is 2x. '5 more than' means adding 5, giving 2x + 5.
3. How many terms are there in the algebraic expression 3x2 - 5x + 2y - 9?
Answer: A
The terms separated by + and - are 3x2, -5x, 2y, and -9, totaling 4 terms.
4. Find the sum of 3m - 2n and 5m + 6n.
Answer: A
(3m + 5m) + (-2n + 6n) = 8m + 4n.
5. Which of the following represents a variable with a fixed value?
Answer: A
The number of days in a week is always 7, making it a fixed quantity, whereas daily temperature, speed, and rainfall vary.
6. Simplify: -4(2x - 3y)
Answer: A
(-4) x (2x) + (-4) x (-3y) = -8x + 12y.
7. Simplify: 2(3a + 4) + 3(a - 1)
Answer: A
Expand: 6a + 8 + 3a - 3 = (6a + 3a) + (8 - 3) = 9a + 5.
8. Simplify: 24a3b2 ÷ 8ab
Answer: A
(248) x (a3/a) x (b2/b) = 3a2b.
9. Which pair of terms consists of LIKE terms?
Answer: A
3xy and -7yx have the exact same variables raised to the same power (xy = yx). Order of multiplication does not change the variables.
10. Simplify: 3p x 2p2
Answer: A
3p x 2p2 = (3 x 2) x (p x p2 = 6p3.