## Multiplication within 10 000

 2.3 Multiplication within 10 000

There are various methods for solving appropriate multiplication operations for numbers up to 10 000

• Using common forms
 Examples of questions and solutions to multiplications operations Mathematical sentences: $$4\space\times\space121=\underline{\quad\quad}$$ $$\begin{array} {rr} \space\space1\space2\space1 \\\times\space\space\space\space\space\space\space4 \\\hline\space\space4 \\\hline \end{array}$$ $$\begin{array} {rr} \space\space1\space2\space1 \\\times\space\space\space\space\space\space\space4 \\\hline\space8\space4 \\\hline \end{array}$$ $$\begin{array} {rr} \space\space1\space2\space1 \\\times\space\space\space\space\space\space\space4 \\\hline4\space8\space4 \\\hline \end{array}$$ Multiply ones $$4\space\times\space1\space\text{ones}=4\space\text{ones}$$ Multiply tens $$4\space\times\space2\space\text{tens}=8\space\text{tens}$$ Multiply hundreds $$4\space\times\space1\space\text{hundreds}=4\space\text{hundreds}$$

So, $$4\space\times\space121=\underline{484}$$