Conduct experiments with decimals. Move them left and right. Discover how multiplying and dividing by powers of 10 shifts numbers through place values.
🧫 Choose Your Experiment
Starting Number
0.5
× 10
Move the decimal point and enter the new number below.
Hundreds
Tens
Ones
.
Tenths
Hundredths
Thousandths
.
🎛️ Control Panel
← DIVIDE (move point to the left)CENTERMULTIPLY (move point to the right) →
No shift
Hints used: 0/4
✅
Excellent!
🧑🔬
⚙️ Settings
Dark Mode
Text Size
Text-to-Speech Speed
Reset All Progress
❓ How to Use Decimal Lab
Goal: Multiplying by 10, 100, or 1,000 moves the decimal point right. Dividing moves it left.
Slider: Drag right to multiply (move decimal right), drag left to divide (move decimal left). The number of places equals your power of 10.
Answer field: Type the resulting number and press Run Experiment or hit Enter.
Place-Value Chart: Shows each digit in its column. Highlighted cells show the current number.
Hints: Up to 4 hints are available per problem — no penalty for using them!
Keyboard shortcuts: Enter = submit, Arrow keys = adjust slider, Escape = close dialogs.