Subjects arithmetic

Russian Peasant 26C92D

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Question: Multiply $34 \times 27$ using the Russian peasant method. Fill in the Russian peasant columns. $34 \quad 27$ Determine which rows to remove, then use the remaining rows to write an expression for the desired sum.
1. **State the problem:** We want to multiply $34$ by $27$ using the Russian peasant multiplication method. 2. **Explain the method:** This method involves repeatedly halving the first number and doubling the second number, discarding rows where the first number is even, then summing the remaining second numbers. 3. **Create the columns:** \begin{align*} \text{First column} & \quad \text{Second column} \\ 34 & 27 \\ 17 & 54 \\ 8 & 108 \\ 4 & 216 \\ 2 & 432 \\ 1 & 864 \end{align*} 4. **Remove rows where the first number is even:** Remove rows with $34$, $8$, $4$, and $2$ because they are even. Remaining rows: \begin{align*} 17 & 54 \\ 1 & 864 \end{align*} 5. **Sum the second column of remaining rows:** $$54 + 864 = 918$$ 6. **Final answer:** $$34 \times 27 = 918$$