Rounding Significant Figures

Front

What is rounding significant figures?

Back

Rounding significant figures is the process of reducing the number of digits in a number while maintaining its value to a certain degree of precision.

Front

What is the first significant figure in a number?

Back

The first significant figure is the first non-zero digit in a number, counting from the left.

Front

How do you round a number to 1 significant figure?

Back

Look at the first non-zero digit. If the next digit is 5 or more, increase the first significant figure by 1. If it's less than 5, keep it the same.

Front

Round 0.658 to 1 significant figure.

Back

0.7

Front

What is the second significant figure in 0.40520?

Back

0

Front

How do you identify significant figures in a decimal number?

Back

Start counting from the first non-zero digit on the left.

Front

Round 509.96 to 4 significant figures.

Back

510.0

Front

What is the second significant figure in 0.010229?

Back

0

Front

Round 78.5 to 1 significant figure.

Back

80

Front

What happens if the digit after the last significant figure is 5?

Back

If the digit is 5, round up the last significant figure by 1.