# Daily 30 Seconds

Random: Easy - Medium - Hard -

Can you solve the mathematical questions in 30 seconds? Click 'start' to see the starting number, and then follow the instructions until you get to the end. Not everyone can solve every 30 Seconds puzzle within 30 seconds.

[save]

−3
×2
−11
×9
−1
÷2
+5
÷9
+8
?

HALVE
+2
×1/4
SQUARE
−4
×5
+1
×5/7
DOUBLE
?

÷9
SQUARE
×25%
−4
×43/5
−3
×31/2
×40%
×4
?

## Notes

Note: take a look at the information about the difficulty levels.

All daily items change at midnight GMT - set your local time zone.

• 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)
• ×3/5    find three fifths (e.g. 1/5 of 15 = 3, so 3/5 = 9)
• ×21/3   find two and a third (e.g. 2 1/3 of 15 = 2 x 15 + 5 = 35)
• ×10%    find 10% (e.g. 10% of 80 = 8)
• √       find the square root (e.g. the square root of 100 is 10)

I have deliberately chosen not include the answers - but you could use a calculator to see the value at each stage of the calculation.

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