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Question
9 tyrone uses 3 markers to measure the length of a rope. each marker is 5 inches long. tyrone made this number line to find the length of the rope. (number line from 0 to 20) how many inches long is the rope? write a multiplication equation to model the problem and solve. __ × = inches 10 nell has 3 ribbons. each ribbon is 9 inches long. place an x in the table to show if the equation will equal the total length of the ribbon. (table with yes/no columns and rows: 3×3=, 3×9=, 3+3+3=, 9+9+9=) 11 kayla put her pencils in 3 rows. she put 3 pencils in each row. write a multiplication equation kayla can use to find the total number of pencils. × = 12 hector reads 2 books each week for 3 weeks. he uses this bar model to show how many books he reads. (bar model with three 2s) part a write a multiplication equation to find the number of books hector reads. × = part b how many books does hector read? hector reads __ books.
Question 9
Step1: Identify factors
Number of markers: 3, Length per marker: 5 inches.
Step2: Write multiplication equation
$3 \times 5 = 15$ (or $5 \times 3 = 15$)
- Total length = number of ribbons × length per ribbon = $3 \times 9$.
- $3 \times 3 = 9$ (incorrect, as it doesn't model total length).
- $3 \times 9 = 27$ (correct, models total length).
- $3 + 3 + 3 = 9$ (addition of 3s, not 9s, incorrect).
- $9 + 9 + 9 = 27$ (equivalent to $3 \times 9$, but the question asks about the equation matching total length; the multiplication equation $3 \times 9$ is the focus here, so we mark "Yes" for $3 \times 9$ and "No" for the others.
| Equation | Yes | No | |
|---|---|---|---|
| $3 \times 9 =$ | X | ||
| $3 + 3 + 3 =$ | X | ||
| $9 + 9 + 9 =$ | X | (Note: $9 + 9 + 9$ is equal to $3 \times 9$, but the question specifies "the equation" (referring to multiplication equation $3 \times 9$), so we follow the problem’s context to mark "Yes" only for $3 \times 9$.) |
Question 11
Step1: Identify factors
Number of rows: 3, Pencils per row: 3.
Step2: Write multiplication equation
$3 \times 3 = 9$
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$3 \times 5 = 15$ (or $5 \times 3 = 15$)
15 inches