Math Olympiad 4

Fractions & Decimals( Week 8 Evaluation)

1. If a number equals 402.6 billion, how many millions are there in the number?

2. Convert the following expanded form into a decimal number: 3 × 10⁻¹ + 8 × 10⁻² + 9 × 10⁻³ + 3 × 10⁻⁴ + 6 × 10⁻⁵ =

3. What fraction is represented by the shaded circle below?

= ? Please express the fraction in its lowest terms.

5. Express the decimal number 0.48 as a fraction to the lowest term.

−

= ? Please express the fraction in its lowest terms.

7. Write the fraction

as a decimal to the nearest hundredth.

−

= ? Please express the fraction in its lowest terms.

9. 8.06 × 6.51 + 8.06 × 3.49 = ?

10. How many hour(s) are there in 90 seconds? Express your answer as a fraction in lowest terms.

By click the below Submit button, answers are finalized.