JSS 3 Practice Past Questions 2

Simplify 6.4 × 10⁵ - 1.5 × 10⁴

• 6.25 × 10⁵

• 62.5 × 10⁵

• 6.25 × 10⁴

•       6.25 × 10⁹

Simplify 8.2 × 10⁶ + 3.4 × 10⁵

• 8.6 × 10⁶

• 82 × 10⁵

• 8.6 × 10⁵

•       8.6 × 10⁷

Simplify 5.5 × 10⁴ - 2.2 × 10³

• 5.3 × 10⁴

• 5.3 × 10³

• 5.5 × 10³

•       5.3 × 10⁵

Simplify 9.1 × 10⁷ + 4.5 × 10⁶

• 9.55 × 10⁷

• 9.55 × 10⁶

• 9.1 × 10⁶

•       9.55 × 10⁸

  Factorize 2d³ + d²(3d – 1)

• d²(5d – 1)

• d²(3d – 1)

• d²(1 – 5d)

• d²(4d-1)

  Factorize 3d³ + d²(2d + 4)

• d²(5d + 4)

• d²(2d + 4)

• d²(1 + 3d)

• d²(3d + 4)

Find the product of 5 and the difference between 15 and 7.

• 45

• 40

• 13

• 54

Find the value of (101_two)²

• 11100011_two

• 1111101_two

• 11001_two

•       100001_two

Factorize 5c² – 45d²

• 5(c-3d) (c+3d)

• (5c-9d) (c-45d)

• 5(c-3d) (c)

• 5(c+3d) (c-3d)

Expand (x+8) (x+5)

• X² + 5x

• x² + 8x + 40

• x² – 13x + 4

• x² – 13x + 40