What is the easiest trick to learn math?

Trick 1: Multiplying a number by 5 To multiply a number by 5, simply divide the number by 2 and multiply it by 10. For example, multiply 86 by 5. This is one of the first and easiest tricks I’ve taught my kids. Once your kids get the hang of it, they’ll take only a moment to find the answer.

What are some cool math tricks?

Examples: 371371 gives you 371 or 552552 gives you 552. A related trick is to take any three-digit number. Multiply it by 7, 11, and 13….Six Digits Become Three

  • Take any three-digit number and write it twice to make a six-digit number.
  • Divide the number by 7.
  • Divide it by 11.
  • Divide it by 13.

What are shortcuts in math?

Mental Math Shortcuts

  • 60 mph = 1 mile per minute.
  • Feet Per Second = MPH * 1.5.
  • MPH = Feet Per Second * 2/3 (derivation)
  • speed of light = 1 foot per nanosecond (derivation)
  • 1 year = 250 work days = 2000 work hours (derivation)
  • Rule of 72: Years To Double = 72/Interest Rate (derivation)
  • Numbers.
  • 10,000 = hundred hundred.

What is the 3 trick in math?

Trick 3: Think of a number Subtract 3 with the result. Divide the result by 2. Subtract the number with the first number started with. The answer will always be 3.

What is math Magic?

Math magic tricks can liven up any math class and create a sense of wonder and curiosity about math. Not only that, math magic creates a new context for algebraic reasoning as students go beyond “What’s the answer?” to explore “What’s the trick?”

How do you divide tricks?

More Divide by Number Tricks

  1. Divide by 1 – Anytime you divide by 1, the answer is the same as the dividend.
  2. Divide by 2 – If the last digit in the number is even, then the entire number is divisible by 2.
  3. Divide by 4 – If the last two digits divide by 4, then the entire number is divisible by 4.