ESTIMATION
ESTIMATION Estimation may be explained as a rough or sensible guess fo a value or calculation. Although, the estimated value is not correct, it gives us an idea of what… Read More »ESTIMATION
JSS 1 Mathematics Notes (1st, 2nd & 3rd Term)
Welcome to our Junior Secondary School 1 (JSS 1) Mathematics notes. Here, students and teachers will find complete, easy-to-understand topics for the 1st term, 2nd term, and 3rd term.
They are carefully organized based on the Nigerian school syllabus. Each topic is explained clearly to help students build a strong mathematical foundation.
Use these notes for regular study, exam preparation, and classroom teaching.
Get the complete JSS 1 Mathematics notes for 1st, 2nd, and 3rd terms. Well-organized topics based on the Nigerian school syllabus to help students learn and revise easily.
L.C.M AND H.C.F
L.C.M AND H.C.F (LOWEST AND HIGHEST COMMON FACTOR) See also OPERATIONS ON FRACTIONS FRACTIONS FRACTIONS WHOLE NUMBERS ALGERAIC FRACTIONS
OPERATIONS ON FRACTIONS
OPERATIONS ON FRACTIONS See also FRACTIONS FRACTIONS WHOLE NUMBERS ALGERAIC FRACTIONS ALGEBRAIC EXPRESSION
FRACTIONS | CONVERTION FROM PERCENTAGE TO DECIMAL AND DECIMAL TO FRACTION
FRACTIONS (CONVERTION FROM PERCENTAGE TO DECIMAL AND DECIMAL TO FRACTION) See also FRACTIONS WHOLE NUMBERS ALGERAIC FRACTIONS ALGEBRAIC EXPRESSION MULTIPLICATION AND DIVISION OF DIRECTED NUMBERS
FRACTIONS (TYPES OF FRACTIONS)
FRACTIONS (TYPES OF FRACTIONS) See also WHOLE NUMBERS ALGERAIC FRACTIONS ALGEBRAIC EXPRESSION MULTIPLICATION AND DIVISION OF DIRECTED NUMBERS APPROXIMATION AND ESTIMATION
WHOLE NUMBERS
WHOLE NUMBERS See also ALGERAIC FRACTIONS ALGEBRAIC EXPRESSION MULTIPLICATION AND DIVISION OF DIRECTED NUMBERS APPROXIMATION AND ESTIMATION ARITHMETIC
INDICES
INDICES See also STANDARD FORM AND APPROXIMATION MODULAR ARITHMETIC RULES OF BASE NUMBER NUMBER BASES BASIC OPERATIONS OF INTEGER
PERIMETER OF REGULAR PLANE SHAPES
The perimeter of a plane shape is the length of its outside boundary or the distance around its edges. Irregular shape An irregular shape does not have a definite shape.… Read More »PERIMETER OF REGULAR PLANE SHAPES
Geometry – Plane Shapes
Plane shapes are two-dimensional shapes bounded by lines known as sides. Any shape drawn on a plane is called a two-dimensional shape (or 2-D shapes for short). When we say… Read More »Geometry – Plane Shapes
SIMPLE EQUATIONS
SIMPLE EQUATIONS An algebraic equation is two algebraic expressions separated by an equal sign. The left hand side is equal to the right hand side (LHS = RHS) e.g 7… Read More »SIMPLE EQUATIONS
SIMPLE ALGEBRAIC EQUATION
SOLUTION OF PROBLEMS ON SIMPLE ALGEBRAIC EQUATION Solving equation by balance method Equation with bracket Equation with fraction. Solving Equation by Balance Method To solve an equation means to find… Read More »SIMPLE ALGEBRAIC EQUATION
ALGEBRAIC EXPRESSION
ALGEBRAIC EXPRESSION Definition with examples Expansion of algebraic expression Factorization of simple algebraic expressions Definition with examples In algebra, letters stand for numbers. The numbers can be whole or… Read More »ALGEBRAIC EXPRESSION
DIRECTED NUMBERS
ADDITION AND SUBTRACTION OF DIRECTED NUMBERS Directed numbers are the positive and negative numbers in any given number line e.g -4 -3 -2 -1 0 1… Read More »DIRECTED NUMBERS
APPROXIMATION OF NUMBERS ROUNDING
APPROXIMATION OF NUMBERS ROUNDING OFF TO DECIMAL PLACES Digits 1,2,34 are rounded down to Zero, while digits 5, 6, 7, 8, and 9 are rounded up to 1 e.g. 126=130… Read More »APPROXIMATION OF NUMBERS ROUNDING
SIMPLE INTEREST
Interest is the money paid for saving a particular amount of money. Simple interest can be calculated using the formula Simple interest I = PRT/100 Where P= principal, R=rate… Read More »SIMPLE INTEREST
FRACTIONS, RATIOS, DECIMALS AND PERCENTAGES
Fractions and Percentages A fraction can be converted to decimal by dividing the numerator by its denominator. It can be changed to percentage by simply multiplying by 100. Example 5.1… Read More »FRACTIONS, RATIOS, DECIMALS AND PERCENTAGES
H.C.F & L.C.M AND PERFECT SQUARES
Highest Common Factors Highest common factor is the greatest number which will divide exactly into two or more numbers. For example 4 is the highest common factor (HCF) of 20… Read More »H.C.F & L.C.M AND PERFECT SQUARES
WHOLE NUMBERS AND DECIMAL NUMBERS
Difference between Whole Numbers and Decimal Numbers Whole number is a number without fraction. For example 1, 2, 3, 41000, 38888 are examples of whole numbers.71/2 is not a whole… Read More »WHOLE NUMBERS AND DECIMAL NUMBERS
BASIC OPERATION OF INTEGERS
Definition of Integer An integer is any positive or negative whole number Example: Simplify the following (+8) + (+3) (ii) (+9) – (+4) Solution (+8) + (+3) = +11 … Read More »BASIC OPERATION OF INTEGERS