Applying Operations on Numbers Expressed Using Scientific Notation to Solve Mathematical and Real-World Problems

Solve the problems, express your answers in scientific notation:
5.0 x 10^-7 mg + 4 x 10^-8 mg

• 9 x 10^-7 mg
• 5.4 x 10^-7 mg
• 54 x 10^-8 mg
• 9 x 10^-7 mg

Tags

CCSS.8.EE.A.4

6.0 x 10^-3 mg + 2 x 10^-4 mg

• 62 x 10^-2 mg
• 8.0 x 10^-3 mg
• 8 x 10^-2 mg
• 6.2 x 10^-3 mg

Tags

CCSS.8.EE.A.4

3.0 x 10^-2 pg – 2 x 10^-6 ng

• 2.8 x 10^-5 ng
• 5 x 10^-8 ng
• 28 x 10^-5 pg
• 3.2 x 10^-4 ng

Tags

CCSS.8.EE.A.4

8.2 km – 3 x 10² m

• 5.2 x 10^-2 m
• 8.107 x 10² m
• 7.9 x 10¹ km
• 11.2 x 10^-2 m

Tags

CCSS.8.EE.A.4

(2 x 10⁴ m)(4 x 10⁸ m)

• 8 x 10³² m²
• 6 x 10¹² m²
• 2 x 10⁶ m²
• 8 x 10¹² m²

Tags

CCSS.8.EE.A.4

(6 x 10⁸ kg)÷(2 x 10⁴ m³)

• 12 x 10⁴ kg/m³
• 4 x 10⁴ m/kg³
• 3 x 10⁴ kg/m³
• 8 x 10¹² kg/m³

Tags

CCSS.8.EE.A.4

(4 x 10³ mg)(5 x 10⁴ kg)

• 2 x 10⁸ g²
• 20 x 10¹² g²
• 9 x 10⁷ mg/kg
• 2 x 10⁷ g²

Tags

CCSS.8.EE.A.4

(2.8 x 10^-2 mg)÷(2 x 10⁴ g)

• 11.8 x 10¹ mg/g
• 4.8 x 10⁶ g
• 1.4 x 10^-9 g
• 0.8 x 10^-6 mg

Tags

CCSS.8.EE.A.4