Math Riddles

Logic Games And Riddles

Riddle 1

How can you add eight 8's to get the number 1,000? (only use addition)

The key to this math riddle is realizing that the one place must be zero. 888 + 88 + 8 + 8 + 8 = 1,000

Riddle 2

If 9999 = 4, 8888 = 8, 1816 = 6, 1212 = 0, then 1919 =

4

Look at how many closed areas there are.

• 9999 has 4 closed areas (the top of the '9')
• 8888 has 8 closed areas, the top and bottom parts of the 8 and there are no other digits
• 1816 has 3 closed areas, (top and bottom of 8 and bottom of 6, and it has 2 other digits ( 3*2=6)
• 1212 has 0 closed areas,(0*4=0)