# JSS 1 Mathematics (1st, 2nd & 3rd Term) ## 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 ## 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 ## 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