Saxon A Test 2b Review

1. Identify which sets of numbers the number -4 belongs.

• Real

• Rational

• Irrational

• Integer

• Whole

2. Compare: $12\div\left(3-1\right)-\frac{8}{4}$  (____)  $9-2^3\ \div4$  

• >

• <

• =

•  $\ge$  

3. Compare:

  $18\ \div\left(\left(4-1\right)^2\ -3\right)$  (____)  $\left(8-\left(5-3\right)^2\ \cdot2\right)$  

• >

• <

• =

• ≥

• ≤

4. Idenitfy the variables and constants in the expression 8 - 6c.

• Variables c, Constants 8, -6

• Variables c, Constants 8, 6

• Variables 6c, Constants 8

• Variables -6c, Constants 8

5. Simplify: (0.2)⁴

• 0.0016

• 16

• 0.16

• 0.016

6 Simplify 18 +3³ + 16 ÷ 2³-20

• 27

• 20

• 5

• 6

7. Simplify: |2-7|

• 5

• -5

• 9

• -9

8. Simplify: x²*x⁶*y⁵*y*x

• x⁹y⁶

• x¹⁰y⁵

• x³y⁴

• xy¹⁵

9. Simplify: 50-4*((8-6)*6)

• 2

• 48

• 552

• 4612

10. Juanita says that the set of whole numbers is closed under addition. Determine whether this statement is true or false. Give a counter example if the statement is false.

• True

• False