How to mutiply numbers ending with 5 quicker than the calculators?

5x5=25
25x25=625

35x35=

  1. Write down 25 first.

  2. Add 1 to the number before 5, i.e 3 = 3+1= 4

  3. Multiple it (4) with the number before 5, i.e 3 x 4=12

  4. Write it (12) down before 25, i.e 1225.

Try one more? 65x65 will be 6 x (6+1= 7) followed by 25 = 4225

Have fun and keep your grey matter fresh.

kind regards.

You can bet it with your friends and get some free coffee and snacks.

That’s supposed to be quick?

Thank you bees.

kind regards.