What is 15 multiplied by 8?

Study for the TABE Math Test. Practice with flashcards and multiple-choice questions, each question offers hints and explanations. Get ready for your exam!

Multiple Choice

What is 15 multiplied by 8?

Explanation:
Multiplication is a shortcut for adding the same number many times, so eight groups of fifteen gives the total. Break fifteen into easy parts: 15 = 10 + 5. Then 8 × 15 = 8 × (10 + 5) = (8 × 10) + (8 × 5) = 80 + 40 = 120. You can also check by a quick shift of perspective, for example doubling and quadrupling: 15 × 8 = (15 × 4) × 2 = 60 × 2 = 120. So the total is 120.

Multiplication is a shortcut for adding the same number many times, so eight groups of fifteen gives the total. Break fifteen into easy parts: 15 = 10 + 5. Then 8 × 15 = 8 × (10 + 5) = (8 × 10) + (8 × 5) = 80 + 40 = 120. You can also check by a quick shift of perspective, for example doubling and quadrupling: 15 × 8 = (15 × 4) × 2 = 60 × 2 = 120. So the total is 120.

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