What the decimal point does
The decimal point separates the ones place from the tenths place.
Decimal place: a place to the right of the decimal point. 34.25 has 2 decimal places.
Watch the decimal point in 3 operations
Add and subtract: line up the decimal points. Multiply: add the decimal places of the 2 numbers. Divide: make the divisor a whole number. The divisor is the number you divide by.
Try it
Put the decimal point in the product
- Pick a problem.
- Count the decimal places in the 2 numbers.
- Drag the orange decimal point to a place in the product. You can also click a gray dot, or use the arrow keys.
- Click Check.
Quick check
Answer 5 questions. You see your score at the end.