# Using your tape measure as a fraction calculator

TLDRThis video explains how to use a tape measure as a substitute for a fraction calculator. The instructor demonstrates simple fraction addition and subtraction problems, like 1/4 + 1/2 and 5/16 + 1/8, using a tape measure to visualize and solve the fractions. Viewers are encouraged to learn how to read a tape measure before attempting this method. It's a handy trick for anyone in construction or welding who might break or forget their calculator, allowing them to quickly solve fraction problems on the go.

### Takeaways

- ๐ You can use a tape measure to do fraction problems if you know how to read it.
- ๐ The idea behind using a tape measure for fractions came from a concern that students might not be able to do fractions without a calculator.
- ๐ข The method requires understanding how to read the fractions on a tape measure, such as 1/4, 1/2, and 1/16.
- โ To add fractions like 1/4 and 1/2, find the positions on the tape and move accordingly. In this case, it results in 3/4.
- ๐ For adding more complex fractions, like 5/16 + 1/8, use knowledge of equivalents (e.g., 1/8 equals 2/16) and calculate the position accordingly.
- ๐งฎ When adding fractions like 15/16 + 3/8, you can use the tape measure to figure out that the result is 1 and 5/16.
- โ The same method applies to subtraction problems, using the tape to move backward through fractional distances.
- ๐ For instance, subtracting 3/8 from 1 and 1/4 lands you at 7/8 using this method.
- ๐ This method is useful if your calculator breaks or if you want to quickly solve fraction problems.
- ๐ Since a tape measure is commonly available, it can be a handy tool for on-the-go fraction calculations.

### Q & A

### What is the method discussed in the video for solving fraction problems?

-The method discussed involves using a tape measure to solve fraction problems by visually adding or subtracting the fractional distances on the tape.

### Why is it important to know how to read a tape measure before using this method?

-It is important to know how to read a tape measure because the method relies on being able to identify fractional increments on the tape. Without this knowledge, the method would be frustrating and ineffective.

### How can you solve the fraction problem 1/4 + 1/2 using a tape measure?

-To solve 1/4 + 1/2 using a tape measure, find the 1/4 mark, then move an additional 1/2 distance (which is the same as moving two 1/4 distances). The result will be 3/4.

### How do you add 5/16 and 1/8 using this method?

-To add 5/16 and 1/8 using a tape measure, first find the 5/16 mark. Since 1/8 equals 2/16, add two increments of 1/16 to reach 7/16.

### What is the process for adding 15/16 and 3/8 on a tape measure?

-To add 15/16 and 3/8, recognize that 1 inch is 16/16, so 15/16 is just below 1 inch. Since 3/8 equals 6/16, add 6 increments to 15/16 to get 1 and 5/16.

### Can this method be used for subtraction problems as well?

-Yes, the method can be used for subtraction. For example, to subtract 3/8 from 1 and 1/4, move backward three 1/8 distances from the 1 and 1/4 mark to get 7/8.

### What is the advantage of using a tape measure for fraction problems?

-The advantage is that a tape measure is often readily available, and it allows for quick, visual solutions to fraction problems without needing a calculator.

### What should you do if you're unfamiliar with reading a tape measure?

-If you are unfamiliar with reading a tape measure, it is recommended to first practice and learn how to read it, as this is essential for using the method effectively.

### Why might someone prefer using a tape measure over a calculator for fractions?

-Someone might prefer using a tape measure because it is a simple, reliable tool that can be used without needing batteries or electronics, and it helps reinforce a physical understanding of fractions.

### How does the tape measure method ensure accuracy in adding and subtracting fractions?

-The tape measure method ensures accuracy by using precise physical increments (e.g., 1/16 or 1/8) marked on the tape, making it easy to visualize and calculate fractions accurately.

### Outlines

### ๐ง Using Tape Measure for Fraction Calculations

In this section, the speaker discusses the suggestion of using construction calculators for class and addresses concerns from a welding teacher about students potentially relying too much on calculators for fractions. The speaker introduces an alternative method: using a tape measure to solve fraction problems. Before proceeding, the speaker emphasizes that it is important to know how to read a tape measure, and recommends reviewing instructional videos or asking for help if needed.

### ๐ Example: Solving 1/4 + 1/2 with Tape Measure

The speaker demonstrates the tape measure method using the example of 1/4 plus 1/2. They explain how to find 1/4 on the tape measure and then add 1/2 by moving the equivalent distance of two more 1/4 increments. The final result is shown to be 3/4. This serves as a basic illustration of how to use a tape measure for fraction addition.

### ๐ Example: Adding 5/16 and 1/8 Using the Tape Measure

Here, the speaker provides another example involving the addition of 5/16 and 1/8. They explain that 1/4 is equivalent to 4/16 and locate 5/16 on the tape measure. Since 1/8 equals 2/16, they add two increments of 1/16 to 5/16, arriving at the solution of 7/16. This further demonstrates how fractions can be added using the tape measure.

### ๐ข Advanced Example: Adding 15/16 and 3/8

The speaker presents a more advanced example with the fractions 15/16 and 3/8. Knowing that 1 inch is 16/16, they identify 15/16 on the tape. Since 3/8 equals 6/16, the speaker adds 6/16 to 15/16, arriving at the total of 1 and 5/16. This showcases how to handle more complex fraction addition using the tape measure.

### โ Subtracting Fractions with the Tape Measure

In this final example, the speaker shows how the tape measure can also be used for fraction subtraction. They demonstrate subtracting 3/8 from 1 and 1/4. Starting at 1 and 1/4, they subtract three 1/8 increments, resulting in the answer of 7/8. This illustrates that the tape measure method is effective for both addition and subtraction of fractions.

### ๐ Practical Tip: Tape Measure as a Calculator Alternative

The speaker concludes by reinforcing the practical utility of using a tape measure to solve fraction problems. Whether a calculator is unavailable or broken, the tape measure offers a reliable and handy alternative, especially since most students already carry one. This method allows for quick and efficient fraction calculations without the need for electronic tools.

### Mindmap

### Keywords

### ๐กTape Measure

### ๐กFractions

### ๐กCalculator

### ๐กConstruction

### ๐กOne-fourth

### ๐กOne-half

### ๐กFive-sixteenths

### ๐กAddition

### ๐กSubtraction

### ๐กInches

### Highlights

Using a tape measure as a fraction calculator if you don't have a calculator.

Ensure you know how to read a tape measure before using this method.

Example of adding fractions: One-fourth plus one-half.

To solve one-fourth plus one-half, find the fourth mark and add a half.

The result of one-fourth plus one-half is three-quarters.

Example of adding fractions: 5/16 plus 1/8.

To solve 5/16 plus 1/8, start at 5/16 and add 2/16 (which is equivalent to 1/8).

The result of 5/16 plus 1/8 is 7/16.

Example of adding fractions: 15/16 plus 3/8.

To solve 15/16 plus 3/8, add three 2/16 segments to reach the result.

The result of 15/16 plus 3/8 is one and five-sixteenths.

The tape measure method can also be used for subtraction problems.

Example of subtracting fractions: one and a quarter minus 3/8.

To solve one and a quarter minus 3/8, subtract three 1/8 segments.

The result of one and a quarter minus 3/8 is 7/8.

This method is a quick alternative when you donโt have a calculator handy.

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