Long Multiplication: 20 × 15
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What is 20 × 15?
Answer
20 × 15 =
300
2 partial products: 20 × 5 = 100 and 20 × 10 = 200. 15 × 20 gives the same 300.
20 × 15 in a column
| 2 | 0 | ||
| × | 1 | 5 | |
| 1 | 0 | 0 | |
| + | 2 | 0 | 0 |
| 3 | 0 | 0 |
In the column: product 300.
Step by step: 20 × 15
- Step 1Multiply the multiplicand by the last digit of the multiplier, 5: 20 × 5 = 100.
- 0 × 5 = 0. Write 0.
- 2 × 5 = 10. Write 0 and carry 1.
- No digits are left, so the carried 1 is written in front: the partial product is 100.
- Step 2The next digit of the multiplier is 1, and it stands for 10: 20 × 10 = 200.
- 0 × 1 = 0. Write 0.
- 2 × 1 = 2. Write 2.
- Sum of the partial products100 + 200 = 300
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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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