This means that you can change the percentage sign with the fraction $\frac{1}{100}$ in the calculation. As in percentage we talk about parts of one hundred, you write it as a decimal by using the tenths and hundredths.

Example 1

Write $0.25$ as a fraction and as percentage.

\begin{array}{l} 0.25 & = \frac{25}{100} = \frac{25 : 25}{100 : 25} = \frac{1}{4} \\ 0.25 & = \frac{25}{100} = 25 \cdot \frac{1}{100} = 25 % \end{array}

Example 2

Write $0.75$ as a fraction and as percentage.

\begin{array}{l} 0.75 & = \frac{75}{100} = \frac{75 : 25}{100 : 25} = \frac{3}{4} \\ 0.75 & = \frac{75}{100} = 75 \cdot \frac{1}{100} = 75 % \end{array}

Example 3

Write $0.20$ as a fraction and as percentage.

\begin{array}{l} 0.20 & = \frac{20}{100} = \frac{20 : 20}{100 : 20} = \frac{1}{5} \\ 0.20 & = \frac{20}{100} = 20 \cdot \frac{1}{100} = 20 % \end{array}

Example 4

Write $0.80$ as a fraction and as percentage.

\begin{array}{l} 0.80 & = \frac{80}{100} = \frac{80 : 20}{100 : 20} = \frac{4}{5} \\ 0.80 & = \frac{80}{100} = 80 \cdot \frac{1}{100} = 80 % \end{array}

Example 5

Write $0.10$ as a fraction and as percentage.

\begin{array}{l} 0.10 & = \frac{10}{100} = \frac{10 : 10}{100 : 10} = \frac{1}{10} \\ 0.10 & = \frac{10}{100} = 10 \cdot \frac{1}{100} = 10 % \end{array}

Example 6

Write $0.37$ as a fraction and as percentage.

\begin{array}{l} 0.37 & = \frac{37}{100} \\ 0.37 & = \frac{37}{100} = 37 \cdot \frac{1}{100} = 37 % \end{array}

Done

Continue

110

How to Convert Between Decimal Numbers and Fractions

111

Converting Fractions, Decimal Numbers and Percentages

112

What are the units of measurement in the metric system?

Activity Set 1

113

What are the metric units for length?

Activity Set 1

114

What are the metric units for area?

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115

What are the metric units for volume?

Activity Set 1

116

What are the metric units for weight?

Activity Set 1

117

What Are the Prefixed for SI Units?

Activity Set 1

118

Volumetric Mass Density (Metric)

Activity Set 1

119

What Is Temperature and What Are Degrees Celsius?

Activity Set 1

120

How Do You Calculate Metric Units of Measurement?

Activity Set 1

121

Choosing Appropriate Metric Units of Measurement

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122

What Are the Units of Measurement in the Imperial System?

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123

What Are the Imperial Units for Length?

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124

What Are the Imperial Units for Area?

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125

What Are the Imperial Units for Volume?

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126

What Are the Imperial Units for Weight?

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127

How to Find Volumetric Mass Density (Imperial)

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128

What Is Temperature and What Are Degrees Fahrenheit?

Activity Set 1

129

How Do You Calculate Imperial Units of Measurement?

Activity Set 1

130

How Do You Convert Imperial to Metric?

Activity Set 1

131

How Do You Convert Metric to Imperial?

132

The Digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)

133

How Do Significant Figures Work?

Activity Set 1

134

Measurement Uncertainty Mean

Activity Set 1

135

What Does Relative Measurement Uncertainty Mean?

Activity Set 1

136

What Is Digital and Analog Clock?

137

Learning About the Clock (Seconds)

Activity Set 1

138

Learning About the Clock (Minutes)

Activity Set 1

139

Learning About the Clock (Hours)

Activity Set 1

140

Learning About the Clock (Whole and Half Hours)

141

Learning About the Clock (Quarters of an Hour)

142

Learning About the Clock (Ten To and Ten Past)

143

Learning About the Clock (Five To and Five Past)

144

Mental Arithmetic with Time

145

Calculations with the Clock

Activity Set 1

146

What Is Day and Night?

147

What Are Days and Weeks?

148

What Are Months?

149

What Are the Seasons of the Year?

150

151

152

What Is the ratio Between Two Numbers?

Activity Set 1

153

What Does Mixing Ratio Mean?

154

How to Find Distance if You Have Velocity and Time

Activity Set 1

155

What Is a Speed Diagram?

156

Coins of the United States Dollar

157

Banknotes of the United States Dollar

158

How Do You Count Money

Activity Set 1

159

How Math Is Used in Shopping

Activity Set 1

160

How Currency Exchange Works

Activity Set 1

161

How Can Personal Finance Best Be Managed?

Activity Set 1

162

What Are the Different Types of Income?

Activity Set 1

163

How Does Commission Salary Work?

Activity Set 1

164

How Does Tax and Tax Basis Work?

Activity Set 1

Activity Set 2

165

How Do Bonus Payments Work?

166

How Value-added Tax is Calculated

Activity Set 1

167

How Credit Card Interest Rates Work

Activity Set 1

168

Krone value and consumer price index

Activity Set 1

169

What Are Price Index and Consumer Price Index?

170

What Are Real Wages in Economics?

171

How Do Loans Work?

Activity Set 1

172

What Is an Amortizing Loan?

Activity Set 1

173

Fixed-rate Mortgage

Activity Set 1

174

How to Budget Your Money?

Activity Set 1

175

How to Use Spreadsheets for Accounting

176

Interest over one period

Activity Set 1

177

Interest Over Several Periods

Activity Set 1

178

How to Compute Compound Interest on Savings

Activity Set 1

179

What Do Revenue, Cost, Unit Cost and Profit Mean?

180

How Do Price and Demand Affect Revenue?

181

Marginal Revenue, Marginal Cost and Marginal Profit

182

How to Find Cost-minimizing Input

183

How to Find Profit-maximizing Input

184

What is a vector?

Activity Set 1

185

What Does Vector Coordinates Mean

Activity Set 1

186

Position Vector

Activity Set 1

187

How Does Vector Addition Work

Activity Set 1

188

Multiplying Vector by Scalar

Activity Set 1

189

Vector Between Two Points

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190

Length of a Vector

Activity Set 1

191

Distance Between Two Points Using Vectors

Activity Set 1

192

Parallel Vectors

Activity Set 1

193

Scalar Product of Two Vectors (2D)

Activity Set 1

194

How Can You Find the angle Between Two Vectors?

195

196

197

Medians of a Triangle

Activity Set 1

198

How to Parametrize a Line?

199

200

201

202

The dot product in three dimensions

203

204

205

How To Calculate the Area of a Parallelogram with Vectors?

Activity Set 1

206

How to Calculate the Area of a Triangle with Vectors

Activity Set 1

207

The volume of a rectangular prism, pyramid, and tetrahedron

Activity Set 1

208

What does Parametrization mean?

209

Parametrization of Lines in Space

Activity Set 1

210

Plane

Activity Set 1

211

Angle between two lines

Activity Set 1

212

Angle between a line and a plane

Activity Set 1

213

Angle between two planes

Activity Set 1

214

Distance from a point to a line

Activity Set 1

215

Distance between lines

Activity Set 1

216

Distance from a point to a plane

Activity Set 1

217

Distance between a line and a plane

Activity Set 1

218

Distance between two planes

Activity Set 1

219

What Is The Equation for a Sphere

Activity Set 1

220

How to Find the Surface Area of a Spherical Segment

Activity Set 1

221

The Intersection Between Planes and the Coordinate Axes

Activity Set 1

222

How to Find the Intersection Between Line and Plane

Activity Set 1

223

How to Find the Intersection Between Two Planes

Activity Set 1

224

Intersection Between a Tangent Plane and a Sphere

Activity Set 1

Fraction → percent

Fraction $\to$ percent