Sometimes in your work you will need to convert an angle measured in decimal degrees to its equivalent in degrees and minutes. Example To convert 27.25° to degrees and minutes, follow these two steps:

- Write the angle as a sum of a whole number and a decimal. 27°+ 0.25°
- Multiply the decimal part by 60′ to convert 0.25 to minutes

27.25°

= 27° + 0.25° × 60′

= 27° + 15′

= 27° 15`

Get a $20-or-so dual-display scientific calculator, even if you can`t take it with you into the exam hall. A calculator is also a learning tool, Technology Use is one of the 9 Essential Skills you can`t do without. Trying out different functions on a calculator will further your understanding and help with building a bigger mental picture. It builds links between numbers and algebra. It is important to try alternative calculations or approaches, to sketch & label angles, tracking changes to units of measure, visualizing to cross-link the concepts of angles and numbers.