Is The Product Always Bigger?

Predict whether a decimal product is bigger or smaller than the numbers you multiply by comparing each with 1.

3 micro-lessons

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When Multiplying Makes Things Smaller

Multiplying by a number between 0 and 1 takes a part of the other number.

With counting numbers, the product is never smaller than the numbers multiplied. With fractions and decimals, it can be.

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The book's table: both above 1, both below 1, one of each.

Problem. When is the product of two decimals bigger than both numbers? When is it smaller than both? (Textbook p. 72)

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Predict which products are less than 1 without multiplying.

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Is $7 \times 0.6$ less than 1? (Textbook p. 73, Q9)

Predict which products are less than 1 without multiplying.

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Is $7 \times 0.6$ less than 1? (Textbook p. 73, Q9)