Maths Tricks Part Two

This video presents three math tricks that can be used as lesson starters or to impress friends. The first trick involves manipulating a number between 1 and 8 to reveal the original number and the digit 2. The second trick results in the number 3 after a series of operations. The final trick involves three-digit numbers, where reversing and subtracting the digits leads to a sum of 18. Each trick is explained with examples.

What is the final result of the first maths trick if you start with the number 3?

• 31

• 23

• 13

• 32

In the second maths trick, what is the result after subtracting the original number from the final result?

• 7

• 3

• 9

• 5

Which operation is performed first in the second maths trick?

• Add 9

• Multiply by two

• Subtract 3

• Divide by two

In the final maths trick, what must be true about the digits of the initial three-digit number?

• The digits must be even

• The digits must add up to 9

• All digits must be different

• All digits must be the same

What is the sum of the digits in the result of the final maths trick?

• 12

• 21

• 18

• 15