1. Scientific Notation: 0.0007 = 7 × 10-4
2. Estimation: √2 is approximately 1.41.
3. Distributive Property: 5(x + 2) = 5x + 10
1. Which property is shown: a + b = b + a?
Commutative Property of Addition.
2. Estimate √10 to the nearest whole number.
3. (Since 3²=9 and 4²=16).
3. Convert 5,000 to scientific notation.
5 × 10³.
4. What is the additive identity of Real Numbers?
0. (a + 0 = a).
5. True or False: Every integer is a rational number.
True.
6. Simplify: 2(√5 + 4).
2√5 + 8.
7. What is the multiplicative identity?
1.
8. Is √18 rational or irrational?
Irrational. 18 is not a perfect square.
9. Write 0.02 in scientific notation.
2 × 10⁻².
10. Find a rational number between 1.1 and 1.2.
1.15 (Many answers possible).
11. What property is a(b + c) = ab + ac?
Distributive Property.
12. Is √(-9) a real number?
No.
13. What results when you add a number and its additive inverse?
0.
14. Simplify: (5 + √2) + 3.
8 + √2. (Associative Property).
15. Smallest Whole Number?
0.
16. Largest negative integer?
-1.
17. Is 3/4 a real number?
Yes (it is rational).
18. True or False: π is exactly 3.14.
False. 3.14 is only an approximation.
19. Solve: | -5 | + | 5 |.
10.
20. What fills the "holes" on a rational number line?
Irrational Numbers.