This is one of the easiest tricks to memorize and instantly makes you look like a math genius.
Mental arithmetic is "weightlifting for the brain," improving working memory and focus. Ready to Level Up?
Add the two digits of the number together and place the sum in the middle. Example: 43 × 11 4 + 3 = 7. Place 7 between 4 and 3: 473 . This is one of the easiest tricks to
While these tricks provide a head start, becoming a true "human calculator" requires consistent practice and specialized drills. AI responses may include mistakes. Learn more
In an era of smartphones and instant access to calculators, the ability to crunch numbers in your head might seem like a lost art. However, mastering mental math isn't just about showing off—it’s about developing a "number sense" that improves logical thinking, boosts confidence in professional settings, and keeps your brain sharp. Add the two digits of the number together
Multiplying by 5 is simply multiplying by 10 and dividing by 2. Cut 148 in half: 74. Multiply by 10 (add a zero): 740 . Why Practice Mental Math?
Subtract the first two digits from 9 and the last digit from 10. 10 - 2 = 8 Result: . 5. Multiplying by 5 (The Half-and-Ten Rule) While these tricks provide a head start, becoming
Take the first digit (6) and multiply by the next number (7): 6 × 7 = 42. Add 25 to the end: . 3. Multiplying Any Two-Digit Number by 11