Quiz about Rational Numbers and Scientific Notation Review

Question 1

Round to the nearest hundreds place: 422.346

Accepted Answer

400

Answer

422.35

Answer

422.2

Answer

422

Question 2

State if each number is rational or irrational.

1 4/5

Accepted Answer

Rational

Answer

Irrational

Question 3

What is the decimal expansion of the following fraction?

$$\frac{2}{3}$$

Accepted Answer

$$.\overline{6}$$

Answer

0.23

Answer

$$0.0\overline{6}$$

Answer

2.3

Question 4

The cube root of which of the following numbers is between 4 and 5?

Accepted Answer

75

Answer

146

Answer

21

Answer

60

Question 5

Question 5.

Accepted Answer

$$\sqrt[]{29}$$

Answer

$$\sqrt[]{35}$$

Answer

$$\sqrt[]{58}$$

Answer

$$\sqrt[]{23}$$

Question 6

The density of hydrogen is 0.0000899 .

Which of the following would be a reasonable estimate of the density of hydrogen?

Accepted Answer

Question 7

Which of the following is a rational number?

Accepted Answer

$$\sqrt{49}$$

Answer

$$\sqrt{2}$$

Answer

$$\pi$$

Answer

$$e$$

Question 8

Which of the following numbers is irrational?

Accepted Answer

$$\sqrt{15}$$

Answer

$$\frac{22}{7}$$

Answer

$$\sqrt{16}$$

Answer

0.333...

Question 9

Convert the number $$2.54 imes 10^{-4}$$ to standard form.

Accepted Answer

0.000254

Answer

0.00254

Answer

0.0254

Answer

254

Question 10

Add the following numbers in scientific notation: $$(7.1 imes 10^5) + (2.9 imes 10^5)$$ .

Accepted Answer

$$1 imes 10^6$$

Answer

$$10 imes 10^5$$

Answer

$$10 imes 10^6$$

Answer

$$1 imes 10^5$$

Question 11

Subtract the following numbers in scientific notation: $$(5.6 imes 10^7) - (3.2 imes 10^6)$$ .

Accepted Answer

$$2.4 imes 10^7$$

Answer

$$5.28 imes 10^7$$

Answer

$$2.4 imes 10^6$$

Answer

$$3.28 imes 10^7$$

Question 12

Divide the following numbers in scientific notation: $$(4.8 imes 10^6) \div (2 imes 10^2)$$ .

Accepted Answer

$$2.4 imes 10^4$$

Answer

$$2.4 imes 10^3$$

Answer

$$24 imes 10^4$$

Answer

$$24 imes 10^3$$

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics