# Tag: Computation

## Standard Form

Numbers written in the form; A x 10n Where, 1 ≤ A ≤ 10, are in Standard Form. When writing a number in standard form: Step 1:  Write the number in the form A. That is, turn the number into a number greater than or equal to 1, and/or less than or equal to 10. This…

## BODMAS

BODMAS BODMAS is the acronym for the order in which arithmetic operations are carried out. This acronym states that given a problem to solve, work out the: B – brackets, M – multiplication, D – division, A – addition and S – subtraction of quantities in that order. Note: Do multiplication and division, in the order…

## Whole Numbers

Whole Numbers This section illustrates how to compute the addition, subtraction, multiplication and division of whole numbers. Addition Add the numbers 584 and 646. Procedure: In addition, we add from right to left. So for the problem above, we start with the extreme right column. The numbers in that column are 6 and 4; when…

## Fractions

Fractions A fraction is a number written in the form , where 3 is called the numerator and 5 the denominator. There are two types of fractions, common and improper fractions. A common fraction is one whose numerator is less than the denominator; hence, all common fractions are less than 1.  An improper fraction is…

## Decimals

Decimals Decimals consist of a whole number and a decimal fraction. Decimal                                = Whole number              +             Decimal fraction 7.8                          = 7          +             0.8 Decimal fractions are numbers written after decimal points; example, .8 is a decimal fraction. The numbers after the decimal point are actually the numerators of a fraction, with the…

## Conversions between Rational Numbers

Conversions between Rational Numbers Fractions to Decimals Method 1 To convert a fraction to a decimal, divide the numerator by the denominator. Example Procedure: is similar to normal division except, since 8 goes into 4 zero times, a decimal point is placed after the zero and a zero added to 4 turning it into 40.…

## Significant Figures

Significant Figures To approximate a number to a given amount of significant figures, follow the instructions outlined in the example below. Example It should be noted that the first significant figure cannot be zero. Example

## Decimal Places

Decimal Places To approximate a number to a given amount of decimal places follow the instructions outlined in the example below. Example

## Percentage or Fraction of a Quantity

Percentage or Fraction of a Quantity To find the percentage of a quantity, express the percentage as a fraction (write the percentage given over 100) and multiply by the quantity. Example What is 40% of 500? To find the fraction of a given quantity, multiply the fraction by the quantity. Example

## A Quantity as a Percentage or Fraction of Another

A Quantity as a Percentage or Fraction of Another To express a quantity as a percentage of another quantity, divide the first quantity by the second and multiply by 100. Example Express 80 as a percentage of 960. To express a quantity as a fraction of another, write the first quantity over the second and…