399 multiplied by 21 is 8379

Explanation: Multiplication is repeated addition. So, 399 × 21 means adding 399, 21 times:

Word Problem Style

If you have 21 boxes and each box contains 399 apples, then the total number of apples is 8379.

Quick Facts

• 399 is called the multiplicand.
• 21 is called the multiplier.
• The result, 8379, is called the product.

Multiplication Table for 399

Explore More Multiplications

• 399 × 22
• 399 × 23
• 399 × 24
• 399 × 25
• 399 × 26
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