Mastering Multiplication Through Doubling Strategy

The video tutorial explains the multiplication strategy of doubling, a basic number sense skill. It covers how to mentally double numbers to simplify multiplication facts, starting with multiplying by two, then four, and finally eight. The strategy involves doubling a number, then doubling the result, and repeating as needed. This method helps in learning multiplication facts efficiently.

What is the initial step in the doubling strategy when multiplying by two?

• Add the number to itself

• Multiply the number by four

• Subtract the number from itself

• Divide the number by two

What term describes the process of doubling a number twice in succession?

• Triple-double

• Double-double

• Double-sum

• Quadruple

What is the result of applying the double-double strategy to the number 7?

• 56

• 28

• 42

• 14

Which multiplication strategy would be used to simplify 4 times 7?

• Single

• Double

• Double-double

• Double-double-double

How do you describe the process of doubling a number three times?

• Double-triple

• Triple-sum

• Triple-double

• Double-double-double

What is the result of 8 times 7 using the double-double-double strategy?

• 72

• 56

• 48

• 64