Nowadays, math skills are on a steady decline because almost everyone has a calculator on their phone. But there was a time when we didn't all have calculators in our pockets, when math was actually something you had to learn.

See below a list of 9 simple tricks you can use to figure out complex math problems without a calculator. These tricks will definitely amaze or even shock your friends!

See below a list of 9 simple tricks you can use to figure out complex math problems without a calculator. These tricks will definitely amaze or even shock your friends!

**1. How to Multiply Large Numbers in Your Head**

**2. How to Figure Out Multiples of 9**

**3. Multiples Of 9 Work In Reverse Order**

**4. How To Add and Subtract Fractions**

**5. How to Multiply by 11**

**6. Figuring Percentages**

**7. How to Find Fractions of Whole Numbers**

**8. Convert Fahrenheit to Celsius**

**9. And The Most Important Tip (!)**

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Inspirations