Long Multiplication: 21 × 4
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What is 21 × 4?
Answer
21 × 4 =
84
One partial product: 21 × 4 = 84. 4 × 21 gives the same 84.
21 × 4 in a column
| 2 | 1 | |
| × | 4 | |
| 8 | 4 |
In the column: product 84.
Step by step: 21 × 4
- Step 1Multiply the multiplicand by the last digit of the multiplier, 4: 21 × 4 = 84.
- 1 × 4 = 4. Write 4.
- 2 × 4 = 8. Write 8.
- Product84
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- Times Table Chart - Any number from 1 to 100, rows from ×1 to ×12
- Long Division Calculator - Step-by-step long division with detailed explanation
- Multiplying Fractions Calculator - Multiply fractions, mixed numbers and whole numbers step by step
- Factors of a Number - List all Factors and Factor Pairs of a Number
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
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