Lesson Worksheet: Calculations Using Scientific Notation Chemistry

In this worksheet, we will practice performing calculations using values expressed in scientific notation.

Q1:

Find the result of (3×10)+(5×10), giving your answer in scientific notation.

  • A8×10
  • B1.5×10
  • C8×10
  • D1.5×10
  • E8×10

Q2:

Find the value of (3×10)÷(6×10), giving your answer in scientific notation.

  • A3×10
  • B5×10
  • C9×10
  • D5×10
  • E0.5×10

Q3:

Find the value of (6×10)×(5×10), giving your answer in scientific notation.

  • A3×10
  • B8×10
  • C1×10
  • D3×10
  • E3×10

Q4:

The table below shows the approximate masses, in kilograms, of single atoms of different elements. What is the mass, in kilograms, of a single molecule of HO2?

Mass (kg) 1.7×102.7×105.3×102.3×102.0×10
Element HOSNC
  • A6.1×10
  • B3.04×10
  • C6.1×10
  • D3.67×10
  • E3.04×10

This lesson includes 16 additional question variations for subscribers.

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