8 But Is It Useful? • Solve problems requiring multiplication and division of integers, utilizing estimation as well as calculation 8m18, 8m21

College Prep Essential Math Chapter 8: Intro to Integers 2 8 1 INTEGERS The first known reference to the idea of integers occurred in Chinese texts in

Positive Numbers (n): are numbers greater than zero; -8 0 8 1 On the number line numbers get larger to as we move from Left to Right

1) −4 2) 2 3) 3 4) 2 5) 4 6) −5 7) −5 8) −17 9) −13 10) 2 11) −1 12) 0 13) −1 14) 7 15) −9 16) 9 17) 2 18) 0 19) −1 20) 12

(Fig 6 5) Thus, (– 3) + (– 5) = – 8 We observe that when we add two positive integers, their sum is a positive integer When we add two negative integers,

Circle the part of the expression that you would complete first 1 -4 × 32 + 6 2 4(13 – 6) 3 (6 + 2) – 15 ÷ 5 × 2 4 3 × (-2) 3 ÷ 6 5 8 – 4(2 + 5

Mathematics 8 N07 Students will be expected to demonstrate an understanding of multiplication and division of integers, concretely, pictorially, and

Grade 8: Integer Review Grade 7: Adding and Subtracting Integers Adding Integers with the same Signs If the two numbers have the same sign then you can

√100 = 10, √8 3 = 2 ℚ Rational Numbers Can be expressed as a ratio of two Integers: a/b, (b ≠ 0); such ratios (fractions) can be expressed as

B Rules for Subtracting Positive and Negative Numbers To subtract signed numbers (either positive or Example #1: (+8) - (+5) = (+8) + (-5) = +3

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Negative numbers move to the left on the number line If you have 8 dollars, and then you get 2 dollars, you have 10 dollars 8 + 2 = 10

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A positive integer paired with a negative integer form a zero pair -8 Add -3 + -2 = -5 Do you notice a pattern or rule? Adding Integers with like

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Solve simple problems requiring the division of integers 8m21, 8m22 CGE 5b, 7b 8, But Is It Useful? Solve problems requiring multiplication and division 8: But Is It Useful? 1: A Positive Attitude Toward Negative Numbers 2: Living with Negatives Day: Lesson Title

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Integers are all of the positive and negative whole numbers Order the numbers -8, 7, -4, and 3 from least to greatest Use a number line to plot the

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N ME 03 05 Know that even numbers end in 0, 2, 4, 6,or 8; or a negative fraction is a quotient of two integers, e g , -8/3 is = -8 divided by 3

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8 NS 1: Understand informally that every number has a decimal expansion; the rational numbers are those with decimal expansions that terminate in zeros or

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Grade 8 2005 - 2009 8 N 1 Compare, order, estimate, and translate among integers, fractions and mixed numbers (i e , rational numbers), decimals,

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Adding Integers Course 2 Warm Up Problem of the Day Lesson Presentation Warm Up Find each absolute value 1 |8| 2 |–6| 3 |–9| 4 |–7| 5 |–12|

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