tuesday #1:
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Tuesday #1:. Which of the following sentences does not belong with the other three. a. b. c. d. Tuesday #2:. Which expression is equivalent to 4 + 6(ac + 2b) + 2ac? a. 4 + 8ac + 12bb. 4 + 10ab + 2ac c.4 + 12abc + 2ac d. 12ac + 20b. - PowerPoint PPT PresentationTRANSCRIPT
Tuesday #1:
Which of the following sentences does not belong with the other three.
a. b.
c. d. 2 2n n 1 1a a
12 12x x 7 7n n
Tuesday #2:
Which expression is equivalent to 4 + 6(ac + 2b) + 2ac?
a. 4 + 8ac + 12b b. 4 + 10ab + 2ac
c. 4 + 12abc + 2ac d. 12ac + 20b
ON TARGET
CLASSIFYING NUMBERSSection 2-1
ON TARGET
Classifying NumbersNatural Numbers- The set of counting numbers- 1, 2, 3, 4, …
Whole Numbers- The set of counting numbers and zero- 0, 1, 2, 3, 4, …
ON TARGET
Classifying NumbersIntegers- The whole numbers and their opposites- … -4, -3, -2, -1, 0, 1, 2, 3, 4, …
ON TARGET
THE NUMBER LINESection 2-1
ON TARGET
Number Line Examples
{integers}
{natural numbers}
ON TARGET
Number Line Examples
{rational numbers between -2 and 3}
{integers less than 2}
ON TARGET
YOUR TURN
ON TARGET
Guided Practice
GP 1 {-2, 0, 2, 4}
GP 2 {-3, -1.5, 0, 1.5, 3}
ON TARGET
Guided Practice
GP 3 {½, pi}
ON TARGET
ABSOLUTE VALUESection 2-3
ON TARGET
Absolute ValueThe distance from zero on a number line. Absolute value is always positive.
Examples: l -3 l = 3l 4 l = 4
ON TARGET
Absolute ValueTreat the absolute value brackets like parentheses. Simplify the inside first, then take the absolute value.GP 4 Evaluate l 10 – 2 lGP 5 Evaluate l -2 - 10 lGP 6 Evaluate - l -3 l
ON TARGET
INTEGERSSection 2-1 and 2-3
ON TARGET
Adding and Subtracting Integers
• Clean up the signs first!-7 – (-10)-7 + 10
Now use rules
ON TARGET
Adding and Subtracting Integers
• Clean up the signs first!• If the signs are the same, add the
numbers and keep the sign.• If signs are different, subtract the
numbers and keep the sign of the LARGER digit.
ON TARGET
YOUR TURN
ON TARGET
Guided Practice
GP 7 -4 + -5 = GP 8 -7 + 12 = GP 9 15 - -4 =
-9519
ON TARGET
RATIONAL NUMBERSSection 2-4 and 2.5
ON TARGET
Rational Numbers- Any number that can be written
as a fraction (includes repeating and terminating decimals).
- Examples: ¾, -2, 15, 0.75, 3.8
ON TARGET
Adding and Subtracting Rational Numbers
• Clean up the signs first!• If the signs are the same, add the
numbers and keep the sign.• If signs are different, subtract the
numbers and keep the sign of the LARGER digit.
Same Rules as In
tegers
ON TARGET
YOUR TURN
ON TARGET
Guided Practice
GP 10 5/8 + (-1/12) = GP 11 -0.005 + 0.0043 =
GP 12 3/8 – (-1/8) =
13/24
-0.00071/2
ON TARGET Assignments:2-3 Study Guide ODDS2-5 Study Guide # 7 – 16
Ch 1 Target Assessment--due by end of class
Download all Study Guides for Ch 2 (under Obj 1b Matrices)