Daily 30 Seconds - Sep 21

Random: easy medium hard warn when leaving unfinished puzzle save

Can you solve the mathematical questions in 30 seconds?

go to the answer box when 'start' is selected save

Easy – Sep 21

start

−9

HALVE

SQUARE

×5

÷3

−4

÷5

+12

Medium – Sep 21

start

−19

×3

−4

×¹/₅

DOUBLE

−2

×²/₃

−15

SQUARE

Hard – Sep 21

start

×2

−8

×25%

−5

÷7

CUBE

−6

×⁵/₇

×20%

print all

Notes

Click 'start' to see the starting number, and then follow the instructions, one at a time, until you reach the end. Not everyone can solve every 30 Seconds puzzle within 30 seconds.

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)
x³/₅ find three fifths (e.g. ¹/₅ of 15 = 3, so ³/₅ = 9)
x2¹/₃ find two and a third (e.g. 2 ¹/₃ of 15 = 2 x 15 + 5 = 35)
x10% 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. You can use a calculator to see the value at each stage of the calculation.

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

All daily items change at midnight GMT. set time zone