Multiply by 12 worksheet for practicing multiplication skills.

The task is to multiply each number by 12 and find the product. Below, I will solve each multiplication problem step by step.

Problem 1: \( 78 \times 12 \)

\[
78 \times 12 = 78 \times (10 + 2) = (78 \times 10) + (78 \times 2) = 780 + 156 = 936
\]

Problem 2: \( 82 \times 12 \)

\[
82 \times 12 = 82 \times (10 + 2) = (82 \times 10) + (82 \times 2) = 820 + 164 = 984
\]

Problem 3: \( 19 \times 12 \)

\[
19 \times 12 = 19 \times (10 + 2) = (19 \times 10) + (19 \times 2) = 190 + 38 = 228
\]

Problem 4: \( 56 \times 12 \)

\[
56 \times 12 = 56 \times (10 + 2) = (56 \times 10) + (56 \times 2) = 560 + 112 = 672
\]

Problem 5: \( 64 \times 12 \)

\[
64 \times 12 = 64 \times (10 + 2) = (64 \times 10) + (64 \times 2) = 640 + 128 = 768
\]

Problem 6: \( 11 \times 12 \)

\[
11 \times 12 = 11 \times (10 + 2) = (11 \times 10) + (11 \times 2) = 110 + 22 = 132
\]

Problem 7: \( 65 \times 12 \)

\[
65 \times 12 = 65 \times (10 + 2) = (65 \times 10) + (65 \times 2) = 650 + 130 = 780
\]

Problem 8: \( 70 \times 12 \)

\[
70 \times 12 = 70 \times (10 + 2) = (70 \times 10) + (70 \times 2) = 700 + 140 = 840
\]

Problem 9: \( 84 \times 12 \)

\[
84 \times 12 = 84 \times (10 + 2) = (84 \times 10) + (84 \times 2) = 840 + 168 = 1008
\]

Problem 10: \( 14 \times 12 \)

\[
14 \times 12 = 14 \times (10 + 2) = (14 \times 10) + (14 \times 2) = 140 + 28 = 168
\]

Problem 11: \( 50 \times 12 \)

\[
50 \times 12 = 50 \times (10 + 2) = (50 \times 10) + (50 \times 2) = 500 + 100 = 600
\]

Problem 12: \( 86 \times 12 \)

\[
86 \times 12 = 86 \times (10 + 2) = (86 \times 10) + (86 \times 2) = 860 + 172 = 1032
\]

Problem 13: \( 52 \times 12 \)

\[
52 \times 12 = 52 \times (10 + 2) = (52 \times 10) + (52 \times 2) = 520 + 104 = 624
\]

Problem 14: \( 85 \times 12 \)

\[
85 \times 12 = 85 \times (10 + 2) = (85 \times 10) + (85 \times 2) = 850 + 170 = 1020
\]

Problem 15: \( 44 \times 12 \)

\[
44 \times 12 = 44 \times (10 + 2) = (44 \times 10) + (44 \times 2) = 440 + 88 = 528
\]

Problem 16: \( 63 \times 12 \)

\[
63 \times 12 = 63 \times (10 + 2) = (63 \times 10) + (63 \times 2) = 630 + 126 = 756
\]

Final Answers:

\[
\begin{aligned}
&78 \times 12 = 936 \\
&82 \times 12 = 984 \\
&19 \times 12 = 228 \\
&56 \times 12 = 672 \\
&64 \times 12 = 768 \\
&11 \times 12 = 132 \\
&65 \times 12 = 780 \\
&70 \times 12 = 840 \\
&84 \times 12 = 1008 \\
&14 \times 12 = 168 \\
&50 \times 12 = 600 \\
&86 \times 12 = 1032 \\
&52 \times 12 = 624 \\
&85 \times 12 = 1020 \\
&44 \times 12 = 528 \\
&63 \times 12 = 756 \\
\end{aligned}
\]

\boxed{
\begin{aligned}
&936, 984, 228, 672, 768, 132, 780, 840, \\
&1008, 168, 600, 1032, 624, 1020, 528, 756
\end{aligned}
}