Worked examples
Two examples
Example 1
Made-up numbers, for practice.
The garden has 40 plots. How many plots are used for flowers?- Find flowers in the key: slice 2, 20 percent.
- A percent is a part of 100. To find 20 percent of 40, change the percent to a decimal and multiply: 20 percent is 0.20.
- 0.20 × 40 = 8.
- Check: vegetables are 50 percent, half of 40, which is 20 plots. Flowers, less than half of that slice, at 8 plots, makes sense.
Answer: 8 plots
Example 2
Made-up numbers, for practice.
The percent for slice 3, London plane trees, is missing. What percent is it?- The slices of a circle graph always add up to 100 percent.
- Add the slices you know: 35 + 30 + 15 = 80.
- The missing slice is the rest of the 100: 100 − 80 = 20.
Answer: 20 percent
Where this is taught: Science Practices, part 4: Tables and graphs · Look Again Quiz 3: Tables and Graphs
In your Kaplan book: Unit 4, Chapter 1, Lesson 1: Comprehend Scientific Presentations · Map of the Terrain, topic 3: Tables and graphs
The drill
Ten questions
How many:
Read what is in the box first, if there is one. Then tap your answer; a few questions ask you to choose words from a drop-down instead, the way the GED test does. Press Check my answers at the bottom.Read what is in the box first, if there is one. Circle your answer; where there are brackets, circle the choice that fits. The answer key, with the reasoning, is on the last page.