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G9 Unit 1 Real numbers, radicals, exponents, scientific notation

Authored by Beatriz Carvalho

Mathematics

9th Grade

CCSS covered

Used 5+ times

G9 Unit 1 Real numbers, radicals, exponents, scientific notation
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30 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The real number below that is irrational is:

5,1212121212....

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A faucet fills a tank in 6 hours, and a drain empties the same tank in 10 hours. If both are open at the same time, how long will it take to fill the tank?

15 hours

7,5 hours

10 hours

15/4 hours

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A cube has a volume of 2000 cm³. The cube's surface is painted. What is the total painted area in simplest radical form?

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A cylinder has a height h that is twice the radius r. If its volume is 432π cm³, what is the total surface area (including top and bottom)?

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Evaluate the following statements regarding set theory:

I. The set of real numbers is nothing more than the intersection of rational and irrational numbers.

II. {1,3,5,7,11} belongs to the set of natural numbers.

III. The square root of 5 is an irrational number.

IV. Non-positive integers belong to the set of natural numbers.

I and IV

II and IV

II and III

III and IV

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The distance from Earth to the Sun is approximately 1.5 × 10⁸ km. A spacecraft travels at 3 × 10⁴ km/h. About how many hours would it take for the spacecraft to reach the Sun?

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