Operations in Scientific Notation

When you are multiplying two numbers in scientific notation, do you need to make the exponents match?

• Yes

• No

Tags

CCSS.8.EE.A.4

When making exponents match, you can choose either exponent to change.

• True; you will get the same answer either way.

• False; you always have to change the smaller one to match the bigger one.

• False; you always have to change the bigger one to match the smaller one.

Tags

CCSS.6.EE.A.1

When adding or subtracting two numbers in scientific notation, the exponents must match.

• True; changing them will change where the decimal point is.

• False; you only need to add them together.

• False; you only need to subtract them.

• True; changing the exponent doesn't change anything else about the decimal.

Tags

CCSS.8.EE.A.4

Solve:

(2.74 x 10⁷) + (5.6 x 10⁷)

• 8.34 x 10⁷

• 8.34 x 10¹⁴

• 8.34 x 10⁰

• 8.34 x 10¹

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.NS.B.3

Solve:

(6.33 x 10^-9) - (4.5 x 10^-9)

• 1.83 x 10^-9

• 1.83 x 10^-18

• 1.83 x 10⁰

• 1.83 x 10¹⁸

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.NS.B.3

Solve:

(7.8 x 10⁷) - (2.45 x 10⁶)

• 7.555 x 10⁷

• 7.555 x 10⁶

• 5.35 x 10⁷

• 5,35 x 10⁶

Tags

CCSS.8.EE.A.4

Solve:

(4.5 x 10²) + (6.2 x 10⁴)

• 6.245 x 10⁴

• 6.245 x 10²

• 10.7 x 10²

• 1.07 x 10⁴

Tags

CCSS.8.EE.A.4

Solve:

(5.8 x 10^-6) / (2 x 10³)

• 2.9 x 10^-9

• 2.9 x 10^-3

• 2.9 x 10⁹

• 2.9 x 10^-2

Tags

CCSS.8.EE.A.4

Solve:

(7.2 x 10^-7)(4 x 10^-1)

• 2.88 x 10^-7

• 28.8 x 10^-8

• 28.8 x 10^-6

• 2.88 x 10^-5

Tags

CCSS.8.EE.A.4

The Statue of Liberty is about 1.5108 x 10² feet tall from the base to the torch. The pedestal is 1.54 x 10² feet tall. How tall is it altogether?

• 3.0508 x 10² feet

• 2.33 x 10⁴ feet

• -2.92 x 10⁰ feet

• 9.81 x 10^-1 feet

Tags

CCSS.8.EE.A.4