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Grade 7 Math Worksheets

There are five sets of scientific notation worksheets:

- Scientific to Standard Notation
- Standard to Scientific Notation
- Multiply Scientific Numbers
- Divide Scientific Numbers
- Add & Subtract Scientific Numbers

Examples, solutions, videos, and worksheets to help Grade 7 and Grade 8 students learn how to add & subtract numbers in scientific notation.

There are two sets of dividing numbers in scientific notation worksheets.

- Add & Subtract numbers in scientific notation (positive exponents).
- Add & Subtract numbers in scientific notation (include negative exponents)

These are the steps to add & subtract numbers in scientific notation:

- Make sure that the exponents of both numbers are the same. If they are not the same, adjust one or both of the numbers so that they have the same exponent.
- Add or subtract the coefficients of the numbers.
- Keep the common exponent from step 1.
- Adjust the result to scientific notation if needed.

Example: (3.52 x 10^{5}) + (2.6 x 10^{2})

- Since the numbers have different exponents, we need to adjust them before adding.

- Adjust the second number to have an exponent of 5: 2.6 x 10
^{2}= 0.0026 x 10^{5}

- Add the coefficients: 3.52 + 0.0026 = 3.5226
- Keep the common exponent 10
^{5}. - The result is 3.5226 x 10
^{5}.

Example: (4.33 x 10^{3}) − (3.6 x 10^{4})

- Since the numbers have different exponents, we need to adjust them before subtracting.

- Adjust the second number to have an exponent of 3: 3.6 x 10
^{4}= 36 x 10^{3}

- Subtract the coefficients: 4.33 - 36 = -31.67
- Keep the common exponent 10
^{3}. - Adjust the result is -31.67 x 10
^{3}= -3.167 x 10^{4}

Have a look at this video if you need to review how to add & subtract numbers in scientific notation.

Click on the following worksheet to get a printable pdf document.

Scroll down the page for more **Add & Subtract Scientific Notation Worksheets**.

**Printable**

(Answers on the second page.)

Scientific Notation Worksheet #1 (positive exponents)

Scientific Notation Worksheet #2 (include negative exponents)

Add & Subtract Numbers in Scientific Notation

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