1 Round off 50.08 to 2 significant figures. flag bookmark A 50 B 50.0 C 50.1 D 50.00 The third significant figure is 0, so the second digit stays unchanged. Thus, 50.08 rounds to 50.
2 Given $341_5 + k_5 = 1202_5$. Find the value of k. flag bookmark A $211_5$ B $301_5$ C $311_5$ D $411_5$ T4 Chapter 2.1d Addition and Subtraction of Numbers in Various Bases \(k = 1202_5 - 341_5\). Subtracting in base 5 gives \(311_5\), so the answer is C.
3 Ameera wants to buy a financial management e-book through an online application. The original price of the e-book is RM45. As a loyal user, Ameera has a promo code that gives her a 20% discount. Calculate the total amount, in RM, that Ameera has to pay, in base 3. flag bookmark A $102_3$ B $210_3$ C $1100_3$ D $1200_3$ T4 Chapter 2.1c Converting Numbers from One Base to Another 20% off RM45 gives RM36. Convert 36 to base 3: \(36=27+9\), so \(1100_3\).
4 Which of the following is a statement? flag bookmark A Use a strong password for your social media account security. B All artificial intelligence (AI) require an internet connection to function. C $7x - 4 > 10$ D Have you redeemed your e-Belia credit this year? T4 Chapter 3.1a Statements and Truth Value A statement is a declarative sentence that can be judged true or false. Option B makes a claim, even though it is false, so it is the correct answer.
5 The following is a sequence of loyalty points collected by Afiq each time he completes a daily task in a video game application in April 2026. 39, 48, 57, x, y Which of the following are the values of x and y? flag bookmark A $x = 64, y = 74$ B $x = 65, y = 74$ C $x = 66, y = 72$ D $x = 66, y = 75$ The sequence increases by 9 each time: 39, 48, 57, 66, 75. So x = 66 and y = 75.
6 A flagpole of height 15 m casts a shadow of length 20 m. Find the value of sin θ, where θ is the angle of elevation from the tip of the shadow to the top of the flagpole. flag bookmark A $\frac{3}{5}$ B $\frac{3}{4}$ C $\frac{4}{5}$ D $\frac{5}{4}$ T5 Chapter 6.1d Solving Problems Involving Sine, Cosine and Tangent Using Pythagoras, the hypotenuse is \(\sqrt{15^2+20^2}=25\). Thus \(\sin\theta=\frac{\text{opposite}}{\text{hypotenuse}}=\frac{15}{25}=\frac{3}{5}\).
7 Given $64 = 4^x$, state the value of x. flag bookmark A 2 B 3 C 4 D 5 T4 Chapter 2.1a Number Bases: Place Value and Digit Value Since \(64 = 4^3\), \(x = 3\).
8 Diagram 1 shows a set of data. 10, 11, 12, 28, 27, 26 Calculate the range of the set of data. flag bookmark A 10 B 12 C 16 D 18 T4 Chapter 8.2a Range and Interquartile Range for Ungrouped Data Range = largest value − smallest value = 28 − 10 = 18. Therefore, the answer is D.
9 Diagram 2 shows a triangle SPR. Given $\frac{QR}{QS} = \frac{3}{4}$, find the length, in cm, of PS. flag bookmark A 9 B 12 C 20 D 25 T5 Chapter 6.1d Solving Problems Involving Sine, Cosine and Tangent Since SR=15 and QR:QS=3:4, let QR=3x, QS=4x. Then 15²=(3x)²+(4x)² gives x=3, so QS=12 and PQ=16. Hence PS=√(16²+12²)=20.
10 Based on matrix $F = \begin{bmatrix} -3 & 2 & 0 \\ 5 & -1 & 16 \\ 9 & 1 & 8 \end{bmatrix}$, identify the element $f_{32}$. flag bookmark A −1 B 5 C 2 D 1 T5 Chapter 2.1a Matrices: Representation, Order and Elements $f_{32}$ means row 3, column 2. In row 3, the second element is 1.