Whole Number 2 x 1 - Column Breakout (Level 1)

This math topic focuses on the skill of breaking down larger multiplication problems into smaller, more manageable components. The practice involves multiplying two-digit numbers by single-digit numbers. Each example provided requires the student to decompose a two-digit number into two parts, such as tens and ones, and then multiply each part separately by the given single-digit multiplier. This approach helps in understanding multiplication through partial products, making it an essential step in learning and improving multiplication efficiency. The questions in this topic provide multiple illustrated multiplication problems, enhancing the conceptual understanding of the distribution property in multiplication.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Multiplication - Whole Number 2 x 1 - Column Breakout Worksheet

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Multiplication - Whole Number 2 x 1 - Column Breakout
1
A LaTex expression showing \begin{aligned}29\hphantom{.}\\[-0.5em]\underline{ multiplied by 9\hphantom{.}}\end{aligned}\\
How can you multiply 29 by 9 by breaking 29 apart
a A LaTex expression showing (20 + 9) multiplied by (9 + 9)
b A LaTex expression showing (20 multiplied by 9)+(9 multiplied by 9)
2
A LaTex expression showing \begin{aligned}21\hphantom{.}\\[-0.5em]\underline{ multiplied by 3\hphantom{.}}\end{aligned}\\
How can you multiply 21 by 3 by breaking 21 apart
a A LaTex expression showing (20 multiplied by 3) multiplied by (1 multiplied by 3)
b A LaTex expression showing (20 multiplied by 3)+(1 multiplied by 3)
3
A LaTex expression showing \begin{aligned}15\hphantom{.}\\[-0.5em]\underline{ multiplied by 2\hphantom{.}}\end{aligned}\\
How can you multiply 15 by 2 by breaking 15 apart
a A LaTex expression showing (10 multiplied by 2)+(5 multiplied by 2)
b A LaTex expression showing (10 + 2) multiplied by (5 + 2)
4
A LaTex expression showing \begin{aligned}11\hphantom{.}\\[-0.5em]\underline{ multiplied by 3\hphantom{.}}\end{aligned}\\
How can you multiply 11 by 3 by breaking 11 apart
a A LaTex expression showing (10 multiplied by 3)+(1 multiplied by 3)
b A LaTex expression showing (10 + 3) multiplied by (1 + 3)
5
A LaTex expression showing \begin{aligned}18\hphantom{.}\\[-0.5em]\underline{ multiplied by 8\hphantom{.}}\end{aligned}\\
How can you multiply 18 by 8 by breaking 18 apart
a A LaTex expression showing (10 + 8) multiplied by (8 + 8)
b A LaTex expression showing (10 multiplied by 8)+(8 multiplied by 8)
6
A LaTex expression showing \begin{aligned}19\hphantom{.}\\[-0.5em]\underline{ multiplied by 2\hphantom{.}}\end{aligned}\\
How can you multiply 19 by 2 by breaking 19 apart
a A LaTex expression showing (10 + 2) multiplied by (9 + 2)
b A LaTex expression showing (10 multiplied by 2)+(9 multiplied by 2)
7
A LaTex expression showing \begin{aligned}28\hphantom{.}\\[-0.5em]\underline{ multiplied by 9\hphantom{.}}\end{aligned}\\
How can you multiply 28 by 9 by breaking 28 apart
a A LaTex expression showing (20 multiplied by 9)+(8 multiplied by 9)
b A LaTex expression showing (20 + 9) multiplied by (8 + 9)
8
A LaTex expression showing \begin{aligned}12\hphantom{.}\\[-0.5em]\underline{ multiplied by 3\hphantom{.}}\end{aligned}\\
How can you multiply 12 by 3 by breaking 12 apart
a A LaTex expression showing (10 multiplied by 3)+(2 multiplied by 3)
b A LaTex expression showing (10 multiplied by 3)+(3 multiplied by 3)