Basic Math Examples

7 \cdot 13

$7 \cdot 13$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

3

$3$ by

7

$7$ . Place the ones digit

(1)

$(1)$ in the result line and carry the tens digit

(2)

$(2)$ . There is one result line for each digit in

13

$13$ .

Step 1.2

Multiply

1

$1$ by

7

$7$ . Place the result in the next column in the result line. There is one result line for each digit in

13

$13$ .

Step 1.3

Add the numbers in each column. In this case, add

1 + 0

$1 + 0$ , then place the

1

$1$ in the result line.

Step 1.4

Add the numbers in each column. In this case, add

2 + 7

$2 + 7$ , then place the

9

$9$ in the result line.

Step 2

The result of

7 \cdot 13

$7 \cdot 13$ is

91

$91$ .

91

$91$