Quick Notes

Quick Notes

Mathematics Chapter 2: Basic Operations
2.3 Multiplication within 10 000
 
2.3  Multiplication within 10 000

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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, \(4\space\times\space121=\underline{484}\)