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Eight eights brainteaser 

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Difficulty: Fun 

Here are eight 8s 

8 8 8 8 8 8 8 8 

Put some plus signs in there to make 1000.

Need a hint?

Grab a piece of paper and just try it out! 

If you don’t have a plus sign between the 8s, then they sandwich together to make a bigger number. For example, an 8 next to another 8 makes 88.

Remember that 88 is much bigger than 8 + 8. And 8888 is too big for this puzzle! 

Brainteaser answer

If you play with this puzzle a bit, you’ll realise that you can’t get close to the answer with just 8 and 88. So you’ll need to include 888. 

Then add 88 to get even closer to the target: 

888 + 88 = 976 

You have three 8s left, and you’re 24 short. Fortunately adding three 8s together makes 24! So here’s your solution:

888 + 88 + 8 + 8 + 8 = 1000 

The post Eight eights brainteaser  appeared first on Double Helix.


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