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Sarah used the rule “Divide the length of the beam by 3 to get the number of nails needed.” Drag the numbers to the correct boxes. Numbers may be used once or not at all.

(1 point)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Length of Beam in Inches Number of Nails
9 3
15
Response area

Response area

8
Response area

10
39 13
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1 answer

To calculate the number of nails needed using Sarah's rule of dividing the length of the beam by 3, we can find the results for the given lengths:

  • Length of Beam: 9 inches → \( 9 ÷ 3 = 3 \) nails
  • Length of Beam: 15 inches → \( 15 ÷ 3 = 5 \) nails
  • Length of Beam: 8 inches → \( 8 ÷ 3 \approx 2.67 \) nails (round down to 2 nails)
  • Length of Beam: 10 inches → \( 10 ÷ 3 \approx 3.33 \) nails (round down to 3 nails)
  • Length of Beam: 39 inches → \( 39 ÷ 3 = 13 \) nails

Based on these calculations, you can fill in the response areas as follows:

  • For Length of Beam 9: Number of Nails = 3
  • For Length of Beam 15: Number of Nails = 5
  • For Length of Beam 8: Number of Nails = 2
  • For Length of Beam 10: Number of Nails = 3
  • For Length of Beam 39: Number of Nails = 13

If any of the numbers are not pre-filled or do not match with your response area, please let me know!