Multiplying Using Double Strategies

This video tutorial teaches how to multiply fluently using doubles patterns. It begins with an introduction to the concept of doubles in multiplication and reviews basic multiplication and addition doubles facts. The tutorial then explains the double strategy for multiplication sentences with 2 as a factor, followed by the double-double strategy for sentences with 4 as a factor. Finally, it covers the double-double-double strategy for sentences with 8 as a factor, breaking down complex multiplication into simpler steps.

What are the two numbers called in a multiplication sentence?

• Products

• Multiples

• Factors

• Divisors

What is the result of 2 times 8 using the double strategy?

• 18

• 16

• 14

• 20

How do you calculate 2 times 6 using the double strategy?

• Add 6 and 6

• Add 6 and 12

• Add 6 and 8

• Add 12 and 12

What is the result of 4 times 3 using the double-double strategy?

• 10

• 12

• 14

• 16

How do you calculate 4 times 7 using the double-double strategy?

• Double 7, then double 12

• Double 14, then double 16

• Double 14, then double 7

• Double 7, then double 14

What is the result of 6 times 8 using the double-double-double strategy?

• 54

• 48

• 42

• 36

How do you calculate 8 times 8 using the double-double-double strategy?

• Double 8, then double 18, then double 36

• Double 8, then double 12, then double 24

• Double 8, then double 14, then double 28

• Double 8, then double 16, then double 32

Why do we use the double-double-double strategy for a factor of 8?

• Because 2 times 2 equals 4

• Because 2 times 2 times 2 equals 8

• Because 2 times 3 equals 6

• Because 2 times 4 equals 8

What is the final product of 8 times 8 using the double-double-double strategy?

• 56

• 68

• 60

• 64

What is the main concept taught in this lesson?

• Subtracting using patterns

• Adding numbers quickly

• Dividing using doubles

• Multiplying fluently using doubles patterns