Multiply 21*2

Math
21⋅2
Multiply using long multiplication.
Tap for more steps…
Multiply 2 by 1. Place the result in the next column in the result line. There is one result line for each digit in 2.
21
⨯2
2
Multiply 2 by 2. Place the result in the next column in the result line. There is one result line for each digit in 2.
21
⨯2
42
Add the numbers in each column. In this case, add 2, then place the 2 in the result line.
21
⨯2
42
2
Add the numbers in each column. In this case, add 4, then place the 4 in the result line.
21
⨯2
42
42
21
⨯2
42
42
The result of 21⋅2 is 42.
42
Multiply 21*2

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