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Estimate the Percent of a Number

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Created on October 20, 2025

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Estimate the Percent of a Number

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Cloud Storage

Let’s look at the first question. Approximately what percent of her storage is used? What is the total cloud storage capacity? What percentage represents this whole?

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s look at the first question. Approximately what percent of her storage is used? What is the total cloud storage capacity? What percentage represents this whole?

Reveal: 6 gigabytes (GB), which represents 100% of the storage

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

The storage capacity is 6 gigabytes, which is equivalent to 100% of the storage. How can you represent the relationship between the two quantities, gigabytes (GB) of storage and percent of storage?

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

The storage capacity is 6 gigabytes, which is equivalent to 100% of the storage. How can you represent the relationship between the two quantities, gigabytes (GB) of storage and percent of storage?

Reveal: We can use a ratio to compare the quantities.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

The ratio represents the relationship between the amount of storage, in gigabytes, and the amount of storage as a percent. 6 gigabytes is equivalent to 100% of the storage. What tool can you use to show the relationship between the quantities?

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

The ratio represents the relationship between the amount of storage, in gigabytes, and the amount of storage as a percent. 6 gigabytes is equivalent to 100% of the storage. What tool can you use to show the relationship between the quantities?

Reveal: One tool is a double number line.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s use a double number line to show the relationship between the amount of storage, in gigabytes, and the amount of storage as a percent. The ratio of gigabytes to percent is How can you use benchmark numbers to label the number line that represents the percent of storage?

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s use a double number line to show the relationship between the amount of storage, in gigabytes, and the amount of storage as a percent. The ratio of gigabytes to percent is How can you use benchmark numbers to label the number line that represents the percent of storage?

Reveal: We can use multiples of 25.

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s use intervals of 25 on the bottom number line. How can you determine the corresponding labels for the number line that represents the amount of storage in gigabytes?

Reveal:

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s use intervals of 25 on the bottom number line. How can you determine the corresponding labels for the number line that represents the amount of storage in gigabytes?

Reveal: We can use multiplication or division to find values that result in equivalent ratios.

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s determine equivalent ratios to find the values for the top number line.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s determine equivalent ratios to find the values for the top number line.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s determine equivalent ratios to find the values for the top number line.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s determine equivalent ratios to find the values for the top number line.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

We can use 1.5 GB intervals on the top and 25 percent intervals on the bottom. How can you represent the amount of storage, in gigabytes, Margaret has used on the number line?

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

We can use 1.5 GB intervals on the top and 25 percent intervals on the bottom. How can you represent the amount of storage, in gigabytes, Margaret has used on the number line?

Reveal: We can plot a point on the top number line that represents the amount used, 4 GB.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

How can you represent the corresponding percent of storage used on the number line?

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

How can you represent the corresponding percent of storage used on the number line?

Reveal: We can plot a point on the bottom number line that is at the same location as the point on the top number line.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

We can plot a point on the bottom number line to represent the percent of storage used.

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Using Tools

How does this tool help represent the problem?

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s look at the second question from the problem. Of the used storage, approximately what percent are photos? What value represents the whole in this situation? Explain.

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Let’s look at the second question from the problem. Of the used storage, approximately what percent are photos? What value represents the whole in this situation? Explain.

Reveal: The whole is 4 GB because we need to determine how much of the used storage (4 GB) is for photos.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

4 gigabytes have been used. This represents 100% of the used storage. What ratio can be used to compare the two quantities, gigabytes of used storage and percent of used storage?

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

4 gigabytes have been used. This represents 100% of the used storage. What ratio can be used to compare the two quantities, gigabytes of used storage and percent of used storage?

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

The ratio represents the relationship between the amount of used storage, in gigabytes, and the amount of used storage as a percent. 4 gigabytes represents 100% of the used storage.

Similar to the first question, a double number line can be used to represent the relationship.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Collaborate and Connect

How can you complete the double number line to show the amount of storage used for photos, in gigabytes, and the corresponding percentage?

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Collaborate and Connect

How can you complete the double number line to show the amount of storage used for photos, in gigabytes, and the corresponding percentage?

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

How can you estimate the percent of the used storage that is used for photos?

Reveal:

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

How can you estimate the percent of the used storage that is used for photos?

Reveal: We can use the benchmark values to estimate what percentage is between 75% and 100%.

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

The amount of storage used is close to 87%.

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McGraw Hill |

Estimate the Percent of a Number

Cloud Storage

Margaret checked the cloud storage for her cell phone. Approximately what percent of her storage is used?

About 70% of the cloud storage is used.

Of the used storage, approximately what percent are photos?

About 87% of the used storage is used for photos.

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McGraw Hill |

Estimate the Percent of a Number

Let’s Explore More

  1. What is a good estimate of the percent of the total storage that is used for photos?
  1. What strategy might you use to determine the approximate percent of the cloud storage that is used for mail, messages, and documents? Note: 1 MB is equal to 0.001 GB.

This material may be reproduced for licensed classroom use only and may not be further reproduced or distributed.

McGraw Hill |

Estimate the Percent of a Number

Correct!

Visual content is a cross-cutting, universal language, like music. We are capable of understanding images from millions of years ago, even from other cultures.

20%

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It’s About

Estimate the shaded amount of each figure.

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McGraw Hill |

Estimate the Percent of a Number

Correct!

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40%

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Correct!

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Correct!

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100%

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Completed!

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