How Missing Number Fills the Blank

Missing Number shows a sum with one unknown. You tap the value that makes it true. Numbers stay small.

Play Missing Number now. This note describes the BitzGaming board — not a generic version of the genre.

How Missing Number works here

• Rounds are a + ? = total, or a − ? = result.
• Operands stay in a friendly range (roughly 1–18).
• Four answers; scoring matches Quick Maths-style micro games.

How to play Missing Number

• Open Missing Number and start.
• Solve for the blank. Tap the correct tile.
• Keep going until 15 seconds end.

Strategy that matches this board

• For addition blanks, subtract the known addend from the total.
• For subtraction blanks, subtract the result from the first number.
• Scan wrong answers for off-by-one traps and skip them.

Personal best

Best score, correct count, and streak are stored locally.

Play something else

Judge a finished sum: Play True or False. More maths: maths games.

Questions about this implementation

Is there multiplication?

Not in this board. Only easy + and −.