Mastering Significant Figures in Calculations

How many significant figures are in the number 703?

• 3

• 1

• 2

• 4

Which of the following numbers has three significant figures?

• 500

• 50

• 500.0

• 50.60

When adding 4231 and 3.51, to which decimal place should the result be rounded?

• Tenths

• Hundredths

• Thousandths

• Ten-thousandths

What is the correct rounded result of 2.36 + 5.4?

• 7.7

• 7.8

• 7.76

• 7.77

What is the rule for rounding the final answer in multiplication and division?

• Round to the nearest tenth

• Round to the nearest whole number

• Round to the least number of significant figures

• Round to the least number of decimal places

What is the result of 8.4 multiplied by 5, rounded to the correct number of significant figures?

• 40

• 42

• 45

• 50

In combined operations, which operation should be performed first?

• Addition

• Subtraction

• Multiplication

• Division

What is the final answer of 3.6 * 4.639 + 5.831, rounded to the correct number of significant figures?

• 22.531

• 22.53

• 23

• 22.5

When adding numbers in scientific notation, what must be true about the exponents?

• They must be the same

• They must be negative

• They must be different

• They must be positive

What is the result of multiplying 2.1 * 10^3 by 4 * 10^5, rounded to the correct number of significant figures?

• 8 * 10^7

• 8.4 * 10^7

• 8 * 10^8

• 8.4 * 10^8