Question

how many decimal places are in the product of 1.91 and 2.3?

one
two
three
four

Explanation:

Count decimal places in the first factor

Using the Decimal Places knowledge point

$$ 1.91 \implies 2 \text{ decimal places} $$

Count decimal places in the second factor

Using the Decimal Places knowledge point

$$ 2.3 \implies 1 \text{ decimal place} $$

Add the decimal places for the product

Using the Decimal Multiplication knowledge point

$$ 2 + 1 = 3 \text{ decimal places} $$

Answer:

• one
• two
• three (Correct answer)
• four