• 8 Lessons

## 1A – 150 Essential Exam Practice Questions

Secondary 1 Express 150 Essential Practice Questions is the first of a two-book series specially written for Secondary 1 students to prepare for their various continual assessments and semestral assessments in Mathematics. The materials in this book follow closely to the latest Mathematics syllabus implemented by the Ministry of Education, containing the first 7 chapters of the Secondary 1 curriculum. These materials are relevant for the students in both the ‘O’ Level and Integrated Programme (IP) tracks and serve to provide a concise yet complete essential collection of practice questions that a student needs to fully comprehend each given topic bounded by the syllabus.
• 8 Lessons

• 6 Lessons

## 1EM Unit 1 – Primes, HCF and LCM

Learning Objectives:
• Understand the definition of prime numbers and composite numbers.
• Determine whether a whole number is prime or composite.
• Express a composite number as the product of its prime factors, i.e., perform the prime factorisation.
• Solve problems involving perfect square, perfect cube, square root, or cube root using prime factorisation.
• Find the highest common factor (HCF) and the lowest common multiple (LCM) of two or more whole numbers.
• Solve problems involving the real-world applications of prime numbers, HCF and LCM.
• 4 Lessons

• 6 Lessons

• 5 Lessons

• 6 Lessons

• 5 Lessons

• 5 Lessons

• 5 Lessons

## 1EM Unit 2 – Real Numbers

Learning Objectives:
• Recognise negative numbers and expand cognition of numbers to real numbers.
• Represent real numbers on a number line and arrange numbers in given order.
• Understand different categorisations of real numbers.
• Perform arithmetic operations on real numbers, use a calculator when necessary.
• Solve problems involving operations of real numbers under real-world contexts.
• 3 Lessons

## 1EM Unit 3 – Approximation and Estimation

Learning Objectives:
• Round off numbers to a given digit.
• Understand the rules of significant figures and round off numbers to a given significant figure.
• Estimate calculation outcomes by rounding off numbers properly and solve problems involving estimation under real-world contexts.
• 4 Lessons

## 1EM Unit 5 – Linear Equations and Simple Inequalities

Learning Objectives:
• Understand the concept of equations.
• Solve linear equations in one variable, including fractional equations that can be reduced to linear equations.
• Formulate linear equations in one variable based on given conditions to solve problems.
• 6 Lessons

## 1EM Unit 6 – Linear Graphs and Its applications

Learning Objectives:
• State the coordinates of a given point in a plane.
• Plot a point in a Cartesian Plane given the coordinates.
• Find unknown values given the equation of a linear function.
• Draw the graph of a linear function.
• Find the gradient and y-intercept of a straight line.
• Solve problems using linear functions and graphs under real-world context.
• 4 Lessons

## 1EM Unit 7 – Number Patterns

Learning Objectives:
• Recognise and describe the basic pattern of a number sequence.
• Determine the next few terms of a given number sequence.
• Find an expression of the general term of a given number sequence.
• Solve problems involving number sequences under real-world context.
• 5 Lessons

• 3 Lessons