Digit Slide ↔️

Multiply and divide by 10, 100 and 1000 without a calculator: slide every digit to a new house on the place value chart, then lock in your answer.

Case 1 of 12 Streak 0 Best 0

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How to play Digit Slide

  1. Read the case, for example 23 × 100 or 3 400 ÷ 100.
  2. Press Slide left once for every × 10, or Slide right once for every ÷ 10. Watch the digits move to new houses on the place value chart.
  3. For a multiple of 10 such as 6 × 30, the game gives you the fact first (6 × 3 = 18); you only slide for the × 10.
  4. Press Lock in. The working appears either way, then the next case loads.
  5. Twelve cases in all: 3 stars for 11–12 correct.

Why sliding beats "add a zero"

Multiplying by 10 makes every digit worth ten times more, so each digit moves one place to the left and a zero holds the empty ones place. Thinking of it as a slide keeps working later, when children meet decimals: 4.5 × 10 = 45, and 3.2 ÷ 10 = 0.32.

For grown-ups

Each slide left multiplies by 10 and each slide right divides by 10, so × 100 is two slides and ÷ 1000 is three. The digits never change; they move to bigger or smaller houses and zeros hold the empty places. Multiples of 10 come in two steps, a known fact and then a slide (6 × 30 = 6 × 3 × 10). Avoid teaching "add a zero": it fails for decimals (4.5 × 10 is 45, not 4.50). Supports AC9M4N05 in the Australian Curriculum v9. Best streaks are saved on this device only.