Question Bank for Grade 8 Mathematics

Write 9,450,000 in scientific notation.

• 9.45 x 10⁴
• 9.45 x 10⁵
• 9.45 x 10⁶
• .945 x 10⁷

Convert 4.3756 x 10⁴ to standard form

(a)  

Convert -5.6 x 10^-3 to standard form

(a)  

Solve:
(6 x 10⁶) / (2 x 10³)

• 12 x 10³
• 3 x 10⁹
• 1.2 x 10⁴
• 3 x 10³

If the exponent is a positive number the original number was...

• a really big number.

• a really small number.

As part of a community service project, a class planted 7x10⁵  trees in a year.  If there are 3.5x10³ students in the school, how many trees did each student plant?

• 2 x 10⁸

• 2 x 10²

• 3.5 x 10⁸

• 3.5 x 10²

Which of the following is correct scientific notation?

• 20.35 x 10⁴
• .2035 x 10⁴
• 2035 ⁴
• 2.035 x10⁴

The distance from the sun to the Andromeda galaxy is 1.2 x 10¹⁹ miles. Light travels at a speed of 5.88 x 10¹² miles per year (called a light-year). How long does it take light from the sun to reach the Andromeda galaxy?

• 2.04 x 10⁶ years

• 2.04 x 10⁷ years

• 7.056 x 10²¹ years

• 7.056 x 10⁷ years