Basic Math Examples

7 \cdot 15

$7 \cdot 15$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

5

$5$ by

7

$7$ . Place the ones digit

(5)

$(5)$ in the result line and carry the tens digit

(3)

$(3)$ . There is one result line for each digit in

15

$15$ .

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

15

$15$ .

Step 1.3

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

5 + 0

$5 + 0$ , then place the

5

$5$ in the result line.

Step 1.4

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

3 + 7

$3 + 7$ , then place the

0

$0$ in the result line and carry the

1

$1$ .

Step 2

The result of

7 \cdot 15

$7 \cdot 15$ is

105

$105$ .

105

$105$