Grade 8 Math Semester 1 Practice

(2ab)³

• 2³a³b³
• 2ab³
• 6a³b³
• 6ab

(5³x²y⁴)⁰

• 5xy
• 1
• 0
• 5

Simplify (-4r⁵)(2r⁸)

• -8r¹³
• -2r¹³
• -8r⁴⁰
• -2y⁴⁰

• x¹²
• x^-12
• x²
• x^-2

Write 7.113 x 10⁷ in standard form.

• 71,130,00
• 7,113,000
• 0.0000007113
• 7,113

Write 0.00000707 in scientific notation.

• 7.07 x 10^-6
• 7.07 x 10⁶
• 707 x 10⁸
• 707 x 10^-8

Write 8.73 x 10^-4  in standard form.

• 0.000873
• 0.0873
• 87,300
• 8,730

(2 x 10⁹)(4 x 10^-4)

• 8 x 10¹³
• 8 x 10³⁶
• 8 x 10⁵
• 8 x 10^-36

Divide:
(6.9 x 10⁷) / (2.3 x 10^-3)

• 3 x 10¹⁰
• 3 x 10⁴
• 3 x 10^-4
• 3 x 10^-11

3x + 2(4x - 4) = 3

• 4
• 3
• 2
• 1