scientific notation add/subtract practice

Give the sum in scientific notation.

(2.6 x 10⁶) + (4.2 x 10⁶)

• 6.8 x 10⁶

• 6.8 x 10¹²

• 8.4 x 10⁶

• 3.2 x 10¹²

Give the sum in scientific notation.

(4.8 x 10⁸) + (5.4 x 10⁸)

• 1.02 x 10⁸

• 1.02 x 10⁹

• 9.2 x 10⁸

Give the difference in scientific notation.

(9.87 x 10⁷) - (7.42 x 10⁷)

• 2.45 x 10⁰

• 3.5 x 10⁷

• 2.45 x 10⁷

• 17.29 x 10⁷

Give the difference in scientific notation.

(8.7 x 10⁹) - (2.5 x 10⁷)

• 6.2 x 10²

• 6.2 x 10⁹

• 7.23 x 10⁷

• 8.675 x 10⁹

Multiply. Give the product in scientific notation.

(9.6×10³) × (6.7×10²)

• 6.432×10⁵

• 6.432×10⁶

• 6.432×10¹

Give the sum of (8.7 x 10⁵) + (7.32 x 10⁷) in scientific notation

• 16.02 x 10⁷

• 7.407 x 10⁵

• 7.407 x 10⁷

• 1.602 x 10⁷

Give the sum of (9.54 x 10⁸) + (3.22 x10⁷) in scientific notation

• 1.276 x 10⁷

• 8.62 x 10¹⁵

• 12.76 x 10⁸

• 9.862 x 10⁸

Which of these are NOT in scientific notation?

• 1.2 x 10³
• 5.3 x 10⁹
• 2.0 x 10⁰
• 10 x 10²

What is scientific notation?

• A long way to write numbers containing a few digits
• A short way to write numbers containing many, many digits
• A number written without exponents
• None of the above

The rule of scientific notation is to write all exponents with a base of ____.

• 50
• 5
• 100
• 10