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Multiplication

This review covers essential multiplication concepts including factors, products, estimation, multiples, and properties of multiplication. Learn how to identify factors in multiplication problems, such as 4 and 6 in 4x6=24. Discover estimation techniques, like rounding numbers to simplify calculations. Understand the concept of multiples, as seen in the multiples of 3. Explore fundamental properties such as the zero property, identity property, commutative property, and associative property, which govern how multiplication works. Enhance your multiplication skills and confidence.

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Multiplication

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  1. Multiplication Vocabulary Review

  2. Factors & Products • 4 x 6 = 24 • 4 and 6 are factors – the numbers being multiplied together. • 24 is the product – the answer to a multiplication problem.

  3. Estimate • Estimate – to make a good guess by rounding. • In the problem 73 x 6, round 73 to 70 and DO NOT round the single digit number of 6! • This would give you a new problem of 70 x 6. • You can then use the basic math fact of 7 x 6 = 42 to help you get the product. • Simply count the number of zeros in the factors and add them to the end of the basic math fact answer. The product is 420!

  4. Multiple • A multiple is the product of any two whole numbers. • For example: 3, 6, 9, 12, and 15 are multiples of 3. • 3x1=3 • 3x2=6 • 3x3=9 • 3x4=12 • 3x5=15

  5. Properties of Multiplication • Zero Property of Multiplication – the product (answer) of any number times 0 is 0! 4x0=0 or 9x0=0 • Identity Property of Multiplication – the product (answer) of any number times 1 is that number! 4x1=4 or 8x1=8 • Commutative Property of Multiplication – two numbers can be multiplied in any order and the product (answer) is the same. 4x2=8 and 2x4=8.

  6. Properties of Multiplication • Associative Property of Multiplication – (3x2)x4 = 3x(4x2) • You can change the grouping of the numbers you multiply! You will still get the same product (answer).

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