This article was reviewed by Grace Imson, MA and by How.com.vn staff writer, Bailey Cho. Grace Imson is a math teacher with over 40 years of teaching experience. Grace is currently a math instructor at the City College of San Francisco and was previously in the Math Department at Saint Louis University. She has taught math at the elementary, middle, high school, and college levels. She has an MA in Education, specializing in Administration and Supervision from Saint Louis University.
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You’ve got to transform two 100s into 200 with just one line. Seems simple, right? Wrong! Even if you’re a math wizard, you might be stumped by this viral riddle, but luckily, we’ve got you covered! In this article, we’re going over how to solve the most popular math riddles using just one line (so you can blow everyone’s mind away).
Steps
- Write 188 on a blank sheet of paper.
- Draw one straight horizontal line directly through the middle of 188.[3]
- Look at the numbers above and below the horizontal line. By dividing the 188 into 2 parts, it turns into a 100 on top and a 100 on the bottom (100+100=200).
- Write down "5+5+5+5=555" on a blank sheet of paper.
- Draw a short straight line to connect the top of the first addition sign to its left side. This transforms the addition sign into a “4” shape.[6]
- Add up your new equation. Since you transformed the first addition sign into a “4,” your new equation reads “545+5+5=555.”[7]
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