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Matt multiplies 9×11×119 \times 11 \times 11 on the board.\newlineHe works out that it equals 1,0891,089. Does that sound about right?\newlineChoices:\newline(A)Yes.\newline(B)No, it is much too high.\newline(C)No, it is much too low.

Full solution

Q. Matt multiplies 9×11×119 \times 11 \times 11 on the board.\newlineHe works out that it equals 1,0891,089. Does that sound about right?\newlineChoices:\newline(A)Yes.\newline(B)No, it is much too high.\newline(C)No, it is much too low.
  1. Calculate Product: Step 11: Calculate the product of 99, 1111, and 1111.\newlineCalculation: 9×11×11=10899 \times 11 \times 11 = 1089.
  2. Verify Calculation: Step 22: Verify the calculation for potential errors.\newlineDouble-check: 11×11=12111 \times 11 = 121; then, 121×9=1089121 \times 9 = 1089.
  3. Compare Result: Step 33: Compare the result with the choices given.\newlineAnalysis: The calculated result is 10891089, which matches the value Matt got.

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