# How to Calculate Grades to Percentage

Written by percila jackson
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Grades are a way for teachers to gauge how well students are doing in class and to assess what they have learnt. Calculate grades to percentage by translating your letter grades to grades on a 100 point scale, finding the percentage grade of each assignment, and finding your overall percentage grade for the entire school term.

Skill level:
Moderately Easy

## Instructions

1. 1

Translate letter grades to grades on a 100 point scale. An A equals at least 90 points. A B equals at least 80 and at most 89 points. A C equals at least 70 and at most 79 points. A D equals at least 60 and at most 69 points, and an F equals at most 59 points.

2. 2

Find the percentage you have received on an assignment or exam by dividing the number of points you received on the assignment or exam by the number of points possible. For example, if an exam has 140 points possible and you receive 89 points on the exam then your percentage is 70 per cent.

3. 3

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