Binary Bedtime Sums

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Binary Bedtime Sums

Turn ones and zeros into numbers before bedtime. Turn binary numbers made of ones and zeros into normal numbers with pixel Daniel Peris at his desk late at night. Answer before each countdown runs out, build a streak and light up a column of old computer lights in this free math game.

Twist: Every number arrives in binary, ones and zeros, and you turn it into a normal number.

Parody. Daniel Peris has no involvement in making these games and does not endorse them. The character is an original pixel-art caricature.

How to play

Tap or click the screen, or press Space, to start.
Each question shows a number in binary, like 1011, and asks what it is as a normal number. The right of the number counts 1, then 2, 4, 8 and so on: 1011 is 8 + 2 + 1 = 11.
Pick the answer with a tap or a click, or press 1, 2, 3 or 4. Later questions add two binary numbers together.
A wrong answer or letting the timer bar run out ends the round. Faster answers and streaks score more.
Press P or Esc to pause and M for sound. When the round ends, share your score and challenge a friend.

Top 10 high scores

No scores yet: play a round and be the first on the board!

All-time top 10 scores in Binary Bedtime Sums
#	Name	Score
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5	---	-
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7	---	-
8	---	-
9	---	-
10	---	-

The story

The babies are asleep, Miriam is reading and pixel Daniel Peris cannot switch his brain off. Instead of counting sheep, he counts like his first computer did: in ones and zeros. He calls the habit Binary Bedtime Sums, and he swears it works better than any lullaby.

Every question arrives in binary, and every right answer lights up another lamp on the panel of an old computer beside his desk, with a ripple of light running up the column. A wrong answer ends the round, and the panel counts the lamps again. Light every lamp and the old machine wakes up with a glowing READY. Then, finally, it is time for bed.