Multiplying and Dividing Integers

Slides:

Advertisements

Similar presentations

Solving Multiplication and Division Equations Lesson 2-7.

Advertisements

Integers: Multiplication & Division

1.4-5: Multiplying Integers: Basic Rules. Ways to Express multiplication Remember: All of these mean the same thing: Five times four 5 × 4 5 · 4 5(4)

3-5 Multiplying and Dividing Integers Course 2 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation Lesson Presentation.

Objective: Learn to multiply and divide integers.

Multiplying Integers. Warm Up 1.9 x 3 =5. 6 x 9 = 2.7 x 10 =6. 10 x 23 = 3.9 x 8 =7. 9 x 9 = 4.15 x 10 =8. 10 x 20 =

ADDING INTEGERS (SAME SIGNS)

INTEGERS AND MULTIPLICATION

11-7 Multiplying Integers Warm Up Find each product ,600 14,000.

Multiplying and Dividing Integers When you MULTIPLY: Two positives equal a positive Two negatives equal a positive One positive & one negative equal.

Multiply and Divide Integers

Solving Two- Step Equations Lesson 2-2. Rules to Remember When solving an equation, the goal is to get the variable by itself. Addition and Subtraction.

Using Inverse Operations How to use an inverse to undo a repeated multiplication problem. 10 October, 2004.

Quick Review Find each sum: (-3) + (-3) + (-3) Answers:

Addition Multiplication Subtraction Division. 1.If the signs are the same, add the numbers and keep the same sign = = If the.

Multiplying and Dividing Integers

Multiplying and Dividing Integers

Interesting Integers – Part Dos

Divide Integers Miss McKeown.

Addition, Subtraction, Multiplication and Division with signed numbers

Integers Rules of Operation.

Adding, Subtracting, Multiplying, and Dividing Integers

Integer Rules Memorize the Rules.

Algebra 1 Notes: Lesson 2-2 Rational Numbers

Multiplying and Dividing Integers

Multiply and divide integers

Multiplying and Dividing Integers

Dividing Positive and Negative Fractions

0-5: Multiply and Dividing Rational Numbers

Multiplication and Division Property of Inequalities

Warm-Up 13 x 3 14 x 4 12 x 11 9 x 13.

Warm up 11/1/ X ÷ 40.

Solving 1-Step Integer Equations

Multiplying Integers.

Solving Two- Step Equations

Chapter 2.4/2.6 Notes: Multiplying and Dividing Real Numbers

Multiplying and Dividing Integers

Objective: Students will divide integers.

Unit: Operations with Rational Numbers

Week August 2015.

Multiplying Integers The product of two positive or two negative integers is positive. The product of a positive integer and a negative integer is negative.

Accentuate the Negative

The Integer Song.

Title of Notes: Multiplying and Dividing Integers pg. 9 RS

Solving Two- Step Equations

Dividing Rational Numbers

1-8 Multiplying and Dividing Integers

Multiplying and dividing Integers

Solving Multiplication and Division Equations

Multiplying Integers SAME SIGNS??? Answer will be POSITIVE. ex)

Solving Two- Step Equations

Multiplying and Dividing Integers

IWBAT to multiply and divide integers.

Multiplying and Dividing Integers

divide dividend divisor inverse operations quotient

Dividing integers.

Review of Integers and Solving Equations

DIRECTED NUMBERS.

Operations with Integers

Dividing negative fractions

Multiplication and Division of Integers

DIVISION OF INTEGERS 1-9.

Multiplying and Dividing Decimals

Multiplying more than two integers

Divide two Integers.

Because division is the inverse of multiplication, the rules for dividing integers are the same as the rules for multiplying integers. Dividing Integers.

Presentation transcript:

Multiplying and Dividing Integers What will the sign be?

Multiplication You can think of multiplication as repeated addition 3 x 2 = 2 + 2 + 2 = 6 3 x (–2) = (–2) + (–2) + (–2) = –6

Random Examples 4 x 5 = 20 -4 x 5 = -20 4 x -5 = -20 -4 x -5 = 20 What do we notice about the signs? Is there anything you can conclude?

Rules MULTIPLYING INTEGERS If the signs are: Your answer will be: the same positive different negative

Examples 3 x 12 =36 4 x -12 -1 x 7 = - 48 4(-3) -3(-5) = -7 13(-2) = - 12 = 15 = - 26

Division Multiplication and division are inverse operations. They “undo” each other. You can use this fact to discover the rules for division of integers.

Examples 4 • (–2) = –8 –8 ÷ (–2) = 4 –4 • (–2) = 8 8 ÷ (–2) = –4 Course 2 Examples 4 • (–2) = –8 –8 ÷ (–2) = 4 Same signs Positive –4 • (–2) = 8 8 ÷ (–2) = –4 Different signs Negative The rule for division is like the rule for multiplication!

Rules DIVIDING INTEGERS If the signs are: Your answer will be: the same positive different negative

Examples 15 ÷ 5 32 ÷ -4 -12 ÷ 3 -4 ÷ -2 27 ÷-3 -125 ÷ -5 =3 = - 8 = -4 =2 = - 9 = 25