How many significant figures in 1200?
1200 has 2 significant figures. Whole numbers that end in zeros are open to doubt. Written 1.20 × 10³, the same value has 3 significant figures.
Significant figures
Tap a digit to see why it counts.
Round to
1200→1.2 × 10³Written as 1200 the trailing zeros are open to doubt.
Nothing is dropped.
Add, subtract, multiply, divide
- 4.2374 significant figures
- 2.513 significant figures
Exact result1.68804780876
Multiply or divide: keep the fewest significant figures.
Digit by digit
- 12
Non-zero digit: countsEvery non-zero digit is significant.
- 00
Trailing zero, no point: does not countTrailing zeros in a number without a decimal point are not counted. Write 1.00 × 10² to make them count.
1.2 × 10³
- Rounded to 1 significant figure1 × 10³
Nearby numbers
Rounding a value? See 2.745 to 3 significant figures.
1200: quick answers
How many significant figures does 1200 have?
1200 has 2 significant figures. In 1200, trailing zeros with no decimal point are not counted. Whole numbers that end in zeros are open to doubt. Written 1.20 × 10³, the same value has 3 significant figures.
Why is 1200 open to doubt?
Without a decimal point the trailing zeros are not counted, so 1200 has 2 significant figures. To show 3 or more, write it in scientific notation, for example 1.2 × 10³.
What is 1200 rounded to 1 significant figure?
1200 rounded to 1 significant figure is 1 × 10³. The first dropped digit is 2, less than 5, so the last kept digit 1 stays.