Which of these numbers is correctly written in scientific notation?

• 1234x10^-3

• 10.5x10⁹

• 1.234x10¹¹

• .5x10⁴

(2 x 10⁹)(4 x 10^-4)

• 8 x 10¹³

• 8 x 10³⁶

• 8 x 10⁵

• 8 x 10^-36

(5.3 x 10²) x (1.0 x 10²)

• 5.3 x 10⁴

• 5.3 x 10²

• 6.3 x 10²

• 53 x 10⁴

(2.2 x 10⁵) x (4.5 x 10²).

• 9.9 x 10¹⁰

• 6.7 x 10⁷

• 9.9 x 10⁵

• 9.9 x 10⁷

(9.4 x 10⁶) (3.2 x 10⁵)

• 30.08 x 10¹¹

• 3.8 x 10¹⁰

• 3.008 x 10¹²

• 1.26 x 10³⁰

When multiplying numbers in scientific notation, what do you do with the exponents?

• Multiply them

• Add them

• Keep them the same

• Make them equal

(3.4 x 10⁵)(1.2 x 10^-3)

• 4.08 x 10^-8

• 4.8 x 10²

• 4.08 x 10²

• 4.08 x 10^-15

(5x10¹⁰) x (3x10⁷)

• 15x10¹⁷
• 1.5x10¹⁷
• 1.5x10¹⁸
• 1.5x9¹⁷

When multiplying in scientific notation, what do you do with the coefficients?

• Keep them

• Add them

• Multiply them

Which of these numbers are NOT in scientific notation?

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