Multiplication Concepts and Techniques

Jimmy Chang shares various tricks for memorizing multiplication facts. He starts with basic concepts like multiplying by zeros and ones, then moves to doubling techniques for twos and fours. He explains patterns for fives and suggests using rhymes and addition to aid memory. Traditional methods like flashcards are also recommended.

What is the result of multiplying any number by zero?

• The number itself

• Zero

• Ten

• One

If you multiply any number by one, what will the result be?

• Zero

• The number itself

• One

• Double the number

What is a simple trick for multiplying by zero?

• Multiply by one

• Subtract the number from itself

• Add the number to itself

• The result is always zero

What is the result of 1 times 12?

• 0

• 24

• 1

• 12

What is the result of 5 multiplied by 2 using the doubling method?

• 10

• 5

• 15

• 20

How do you calculate 6 times 4 using the double-doubling method?

• 6 * 3, then add 6

• 6 * 4 directly

• 6 * 2, then double the result

• 6 + 6 + 6 + 6

What is the result of doubling 5?

• 15

• 10

• 5

• 20

What is the last digit of the product when 5 is multiplied by an even number?

• 8

• 5

• 0

• 2

What is the last digit of the product when 5 is multiplied by an odd number?

• 0

• 8

• 5

• 2

What is the result of 5 times 7?

• 35

• 40

• 45

• 30