Math 8 Chapter 1 Open Notes Quizizz

What is the decimal expansion of the following fraction? $\frac{1}{20}$  

• 0.5

• 0.05

•  $0.\overline{05}$  

•  $0.\overline{5}$  

At what position on the number line is the red dot located?

•  $\sqrt{44}$  

•  $\sqrt{34}$  

•  $\sqrt{88}$  

•  $\sqrt{54}$  

Which of the following is a rational number?

• $\pi$

• $\sqrt{25}$

• $\sqrt{44}$

• $2\pi$

Which of the following is an irrational number?

• $\sqrt{16}$

• $\frac{3}{7}$

• 3.8

• $\sqrt{7}$

Which of the following is equal to 10?

• $\sqrt{121}$

• $\sqrt{100}$

• $\sqrt{90}$

• $\sqrt{49}$

What is the approximate value of   $\sqrt{67}$  ?

• 8.1853...

• 7.8102...

• 9.1651....

• 8.8317....

Using the formula sheet, which expression is equivalent to the following:
 $\frac{\left(4^2\right)^5}{4^{17}}$  

•  $\frac{1}{4^7}$  

•  $\frac{1}{4^{27}}$  

•  $4^7$  

•  $4^{27}$  

Which shows the expression below in scientific notation?

(4 × 10⁴) × (9 × 10^-4)

• 3.6 × 10²

• 3.6 × 10⁰

• 13 × 10⁰

• 3.6 × 10¹

Which shows the expression below in simplified form?

(4.1 × 10¹⁴) + (2.8 × 10¹¹)

• 6.9 × 10¹⁴

• 4.128 × 10¹¹

• 4.10028 × 10¹¹

• 4.1028 × 10¹⁴

The speed of light is 299,792.458 km/s. Which of the following would be a reasonable estimate for the speed of light?

• $3\ x\ 10^5\ \frac{km}{s}$

• $3\ x\ 10^6\ \frac{km}{s}$

• $3\ x\ 10^{-5}\ \frac{km}{s}$

• $3\ x\ 10^{-6}\ \frac{km}{s}$