Reference
Practice
Premium
Log In
English
English ✔
Español
日本語
简体中文
繁體中文
\[21\times 3\]
+
−
.
ln
>
<
×
÷
/
log
≥
≤
(
)
log
x
=
%
Choose Topic
Examples
"(x+1)/2+4=7"
"factor x^2+5x+6"
"integrate cos(x)^3"
More »
21*3
21*3
21\times 3
Available Methods
Algorithm
Partial Product
Box
1
Use the algorithm method.
2
1
×
3
6
3
2
Therefore,
21
×
3
=
63
21\times 3=63
2
1
×
3
=
6
3
.
63
63
6
3
Done
63
Like this solution? Share it!
Copy Link
How can we make this solution more helpful?