Revision of Rational Numbers + Exponents

The multiplicative inverse of (-10)^-1 is

• (10)^-1

• $\frac{1}{-10}$

• $\left(-10\right)^1$

• 10

 $5\ \times10^5\ \times3\ \times10^{-2}\ =$  
(Write in scientific notation)

•  $15\times10^3$  

•  $1.5\times10^4$  

• 0.015

•  $1.5\times10^7$  

Is this number: Rational or Irrational?

• Rational

• Irrational

 $3^{-5}\times3^{-2}$  

Solve and write in positive exponent:

•  $3^{-7}$  

•  $-3^7$  
  

•  $\frac{1}{3^7}$  

•  $3^7$  

Which of these mean 1?

(Tick all that apply)

•  $1^1$  

•  $5^0$  

•  $3^0+5^0$  

•  $3^0\times5^0$  

What rational number is represented by the green dot?

• $1\ \frac{1}{4}$

• $\frac{1}{4}$

• $1\ \frac{3}{4}$

• $\frac{3}{4}$

Which of these correctly represent a number in scientific notation?

• 0.5 x 10⁵

• 12.5 x 10⁵

• 1.25 x 10^-3

• 0.000125