Multiplying and Dividing Integers

NC.7.NS.2 - Apply and extend previous understandings of multiplication and division.

• A. Understand that a rational number is any number that can be written as a quotient of integers with a non-zero divisor. 

• B. Apply properties of operations as strategies, including the standard algorithms, to multiply and divide rational numbers and describe the product and quotient in real-world contexts. 

• C. Use division and previous understandings of fractions and decimals. 

• SWBAT multiply and divide positive and negative integers

• SWBAT multiply and divide rational numbers

If you had to explain what division is, what would you say?

If you had to explain what multiplication is, what would you say?

Multiplying Integers: Different signs

• -3 × 2

• -6 × 5

• -1 × 9

Dividing Integers: Different signs

• -4 ÷ 2

• -9 ÷ 3

• -12 ÷ 4

• 15 ÷ 3

• -15 ÷ -3

• -9 ÷ -3

• 7 × 3

• -7 × -3

• -8 × -2

Multiplying

Dividing

Integer Rules for × and ÷

Integer Rules for × and ÷

Same signs: Positive Answer

Different signs: Negative Answer