Day Problems Simplify each expression. 1. 2 (5 + 9) – 62. (2 + 9) (8 – 4) 3. 6 [13 – 2 ( 4 +...

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Day Problems • Simplify each expression. 1. 2 (5 + 9) – 6 2. (2 + 9) • (8 – 4) 3. 6 [13 – 2 ( 4 + 1)] Evaluate each expression for m = 4 and r = 8. 4. m 2 + r 2 5. 2m 2 r

Transcript of Day Problems Simplify each expression. 1. 2 (5 + 9) – 62. (2 + 9) (8 – 4) 3. 6 [13 – 2 ( 4 +...

Page 1: Day Problems Simplify each expression. 1. 2 (5 + 9) – 62. (2 + 9) (8 – 4) 3. 6 [13 – 2 ( 4 + 1)] Evaluate each expression for m = 4 and r = 8. 4. m 2 +

Day Problems• Simplify each expression.

1. 2 (5 + 9) – 6 2. (2 + 9) • (8 – 4)

3. 6 [13 – 2 ( 4 + 1)]

Evaluate each expression for m = 4 and r = 8.

4. m2 + r2 5. 2m2r

Page 2: Day Problems Simplify each expression. 1. 2 (5 + 9) – 62. (2 + 9) (8 – 4) 3. 6 [13 – 2 ( 4 + 1)] Evaluate each expression for m = 4 and r = 8. 4. m 2 +

1.3 Exploring Real Numbers• Natural numbers - counting numbers starting

with 1.Ex. 1 , 2, 3, ….

• Whole numbers – counting numbers starting with 0.Ex. 0, 1, 2, 3, …

• Integers – Counting numbers – no decimals.Ex. -2 , -1, 0,1, 2, etc.

• Rational number – any number that you can write in the form a, where a and b are integers

b and b ≠ 0.

Page 3: Day Problems Simplify each expression. 1. 2 (5 + 9) – 62. (2 + 9) (8 – 4) 3. 6 [13 – 2 ( 4 + 1)] Evaluate each expression for m = 4 and r = 8. 4. m 2 +

Classifying NumbersName the set(s) of numbers to which each number

belongs.

a. c. 0

b. 23 d. 4.581

Solutions:

a. Rational numbers

b. Natural number, whole number, integer, rational number

c. Whole number, integer, rational

d. Rational number

17

31

Page 4: Day Problems Simplify each expression. 1. 2 (5 + 9) – 62. (2 + 9) (8 – 4) 3. 6 [13 – 2 ( 4 + 1)] Evaluate each expression for m = 4 and r = 8. 4. m 2 +

Irrational number

• Irrational number - cannot be expressed in the form a, where a and b are integers.

b

Ex.

0.101001000…., π,

These are irrational because the decimals of each of these are nonrepeating and nonterminating.

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