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Converting Decimals to Fractions (using multiplication by 16)

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1:17
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At 0:41 in

Turning fractions into decimals and back to fractions! #diy

What happens here

The instructor demonstrates a practical method for converting decimals back to fractions, specifically useful when working with imperial measurements often in sixteenths of an inch. He starts with 0.125. To convert it to a fraction with a denominator of 16, he multiplies 0.125 by 16, which equals 2. This '2' becomes the numerator over 16 (2/16), which simplifies to 1/8. He repeats this process with 0.25 (1/4), multiplying by 16 to get 4 (4/16, simplifies to 1/4). Finally, for 0.75 (3/4), multiplying by 16 yields 12 (12/16, simplifies to 3/4). This method allows for quick conversion of decimal measurements to their fractional counterparts used on a tape measure.

Goal: Perform decimal to fraction conversions using a common denominator (16ths).

Tools and materials

  • Dry-erase marker Unbranded — Writing the calculations and results
  • Whiteboard Unbranded — Demonstrating the multiplication and conversion

What they say

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way? How do you do that? So, let's take 1/8 for an example, which we know is .125. Just multiply it by 16. Times 16 equals 2. So, 2 16ths equals 1 8. You get it? Let's do it again. We'll do uh 16th = 4. 4 16ths = 1/4, okay? .75 7 5 * 16 is 12. What is that? That's 3/4. Easy day. Follow for more.

Auto-generated from the video audio.