Basic Math Examples

15⋅7
Step 1
Multiply using long multiplication.
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Step 1.1
Multiply 7 by 5. Place the ones digit (5) in the result line and carry the tens digit (3). There is one result line for each digit in 7.
3
15
⨯7
5
Step 1.2
Multiply 7 by 1 and add the carried 3. Place the ones digit (0) in the result line and carry the tens digit (1). There is one result line for each digit in the 7.
15
⨯7
105
Step 1.3
Add the numbers in each column. In this case, add 5, then place the 5 in the result line.
15
⨯7
105
5
Step 1.4
Add the numbers in each column. In this case, add 0, then place the 0 in the result line.
15
⨯7
105
05
Step 1.5
Add the numbers in each column. In this case, add 1, then place the 1 in the result line.
15
⨯7
105
105
15
⨯7
105
105
Step 2
The result of 15⋅7 is 105.
105
15⋅7
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[
[
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√
√
≥
≥
π
π
7
7
8
8
9
9
≤
≤
4
4
5
5
6
6
/
/
^
^
×
×
>
>
!
!
1
1
2
2
3
3
-
-
+
+
÷
÷
<
<
,
,
0
0
.
.
%
%
=
=
 [x2  12  π  ∫⁡xdx ]