Mastering Multiplication of Directed Numbers

The video tutorial explains how to multiply positive and negative numbers in various combinations. It starts with a review of the positive times table, showing how each step down reduces the product by a fixed number. The tutorial then introduces the concept of a negative times table, demonstrating that multiplying a positive by a negative results in a negative product. It further explores how reducing the first number in multiplication affects the product, leading to the conclusion that a negative multiplied by a negative yields a positive product.

What is the main topic of the video?

• Subtracting positive and negative numbers

• Dividing positive and negative numbers

• Multiplying positive and negative numbers

• Adding positive and negative numbers

Tags

CCSS.7.NS.A.1C

What is the result of 3 times 4?

• 15

• 12

• 10

• 7

Tags

CCSS.3.OA.C.7

If you move down the three times table from 3 times 4, what is the next product?

• 6

• 12

• 9

• 15

Tags

CCSS.3.OA.A.1

What happens to the product when you multiply a positive number by a negative number?

• The product is negative

• The product is zero

• The product is positive

• The product is undefined

Tags

CCSS.7.NS.A.2A

What is the result of multiplying 3 by -1?

• 3

• 0

• -3

• -1

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

When you reduce the first number in a multiplication by 4, what happens to the product?

• It becomes zero

• It stays the same

• It decreases by 4

• It increases by 4

Tags

CCSS.3.OA.D.9

What is the result of multiplying -2 by 3?

• 0

• -6

• -3

• 6

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the product of -3 times -2?

• 3

• 0

• 6

• -6

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What happens to the product when you multiply two negative numbers?

• The product is positive

• The product is zero

• The product is negative

• The product is undefined

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of multiplying -4 by -1?

• 1

• 0

• 4

• -4

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B