Adding/Subtracting Sig Figs

Front

What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between them, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

What is the rule for adding numbers with significant figures?

Back

When adding, the result should be rounded to the least number of decimal places of any number in the operation.

Front

What is the rule for subtracting numbers with significant figures?

Back

When subtracting, the result should be rounded to the least number of decimal places of any number in the operation.

Front

Calculate: 0.0005 meters + 0.029 meters

Back

0.030 meters (rounded to two decimal places).

Front

Calculate: 1200 light years - 100 light years

Back

1100 light years (rounded to the nearest hundred).

Front

Calculate: 86.04 + 4.04

Back

90.08 (rounded to two decimal places).

Front

Calculate: 0.495 g - 0.1 g

Back

0.4 g (rounded to one decimal place).

Front

Calculate: 33 g - 2.1 g

Back

31 g (rounded to the nearest whole number).

Front

What is the significance of trailing zeros in decimal numbers?

Back

Trailing zeros in decimal numbers are significant because they indicate precision in the measurement.