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Daily 30 Seconds - Easy

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Click 'Start' to see the number you're starting with, and then follow the instructions until you get to the end.

−8

HALVE

+4

SQUARE

+5

 

÷9

−1

×4

+7

?

 


Daily 30 Seconds - Medium

×2

+8

2/3

−4

5/8

 

÷2

−12

SQUARE

DOUBLE

?

 


Daily 30 Seconds - Hard

+26

x 90%

−4

÷5

SQUARE

 

−1

3/4

−2

HALVE

?

 


Notes

  • HALVE   divide by 2 (e.g. 10 ÷ 2 = 5)
  • DOUBLE  multiply by 2 (e.g. 10 x 2 = 20)
  • SQUARE  times by itself (e.g. 10 x 10 = 100)
  • CUBE    times by itself twice (e.g. 10 x 10 x 10 = 1,000)
  • x 3/5   find three fifths (e.g. 1/5 of 15 = 3, so 3/5 = 9)
  • x 21/3  find two and a third (e.g. 2 1/3 of 15 = 2 x 15 + 5 = 35)
  • x 10%   find 10% (e.g. 10% of 80 = 8)
  • √       find the square root (e.g. the square root of 100 is 10)

 



 

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