Unit 1 Study Guide_Grade 7

The value for $3.1\ \times10^4$   in standard form is __.

Which answer has the following numbers in descending order?                

    $35\%$ ,  $-\frac{10}{16}$  , $-\frac{3}{2}$  , $1.5\ \times10^{-2}$  

•  $-\frac{10}{16},-\frac{3}{2},\ 35\%,\ 1.5\ \times10^{-2}$  

•  $35\%,\ 1.5\times10^{-2\ },\ -\frac{10}{16},\ -\frac{3}{2}$  

•  $-\frac{3}{2},\ -\frac{10}{16},\ 1.5\times10^{-2},\ 35\%$  

•  $1.5\times10^{-2},\ 35\%,\ -\frac{10}{16},\ -\frac{3}{2}$  

Which of the answers shows the following arranged in ascending order? $5.9\times10^{-4},\ 5.9\ \times10^8,\ 7.2\times10^6$  

•  $5.9\times10^8,\ 7.2\times10^6,\ 5.9\times10^{-4}$  

•  $5.9\times10^{-4},\ 7.2\times10^6,\ 5.9\times10^8$  

•  $7.2\times10^6,\ 5.9\times10^8,\ 5.9\ \times10^{-4}$  

•  $5.9\times10^{-4},\ 7.2\times10^6,\ 5.9\times10^8$  

Which answer shows a perfect square along with a VALID justification of what makes it a perfect square?

• 16; because 8 x 2 = 16

• 36; because 6² = 36

• 4; because 2 + 2 = 4

• 29.16; because 5.4² = 29.16

Select all of the numbers that are perfect squares.

• 114

• 121

• 0

• 225

• 200

 Investigate the powers of 10 below. Select the fraction and decimal form for $10^{-5}$  .

 $10^{-3}=\frac{1}{1,000}=0.001$   $10^{-4}=\frac{1}{10,000}=0.0001$  

 

•  $\frac{1}{100,000}$  

• 0.000001

• 0.00001

•  $\frac{1}{1,000,000}$  

Select all of the true statements.

• $\left|6\right|=-6$

• $7=\left|7\right|$

• $\left|-2.3\right|=2.3$

• $-\left|5\right|=5$

• $8=\left|-8\right|$

What is the value of 10⁰?

• 10

• 0

• 1

• 100

Which symbol makes the statement true? $\frac{4}{5}_{ }$  ____  8%

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Which symbol makes the statement true?

-0.3% _____-0.3

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