Multiply Side Lengths for Area - 3rd Grade Math
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What is the area of a rectangle with side lengths $8$ and $2$ units?
What is the area of a rectangle with side lengths $8$ and $2$ units?
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$16$ square units. Multiply: $8 \times 2 = 16$.
$16$ square units. Multiply: $8 \times 2 = 16$.
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State the formula for the area of a rectangle with side lengths $l$ and $w$.
State the formula for the area of a rectangle with side lengths $l$ and $w$.
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$A = l \times w$. Area equals length times width for rectangles.
$A = l \times w$. Area equals length times width for rectangles.
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What is the area of a rectangle with side lengths $7$ and $5$ units?
What is the area of a rectangle with side lengths $7$ and $5$ units?
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$35$ square units. Multiply: $7 \times 5 = 35$.
$35$ square units. Multiply: $7 \times 5 = 35$.
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A classroom bulletin board is $8$ ft by $6$ ft. What is its area in square feet?
A classroom bulletin board is $8$ ft by $6$ ft. What is its area in square feet?
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$48\ \text{ft}^2$. Multiply dimensions: $8 \times 6 = 48$.
$48\ \text{ft}^2$. Multiply dimensions: $8 \times 6 = 48$.
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What is the area of a rectangle with side lengths $9$ and $3$ units?
What is the area of a rectangle with side lengths $9$ and $3$ units?
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$27$ square units. Multiply: $9 \times 3 = 27$.
$27$ square units. Multiply: $9 \times 3 = 27$.
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Find the area of a rectangle that is $11$ units by $2$ units.
Find the area of a rectangle that is $11$ units by $2$ units.
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$22$ square units. Multiply: $11 \times 2 = 22$.
$22$ square units. Multiply: $11 \times 2 = 22$.
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Identify the product that matches the rectangular area: $4$ rows of $6$ squares each.
Identify the product that matches the rectangular area: $4$ rows of $6$ squares each.
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$4 \times 6 = 24$. Rows times columns gives total squares.
$4 \times 6 = 24$. Rows times columns gives total squares.
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What is the area of a rectangle shown as $3$ rows and $8$ columns of unit squares?
What is the area of a rectangle shown as $3$ rows and $8$ columns of unit squares?
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$24$ square units. Count total squares: $3 \times 8 = 24$.
$24$ square units. Count total squares: $3 \times 8 = 24$.
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What is the area of a rectangle with side lengths $6$ and $4$ units?
What is the area of a rectangle with side lengths $6$ and $4$ units?
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$24$ square units. Multiply: $6 \times 4 = 24$.
$24$ square units. Multiply: $6 \times 4 = 24$.
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What does the area of a rectangle measure, using square units?
What does the area of a rectangle measure, using square units?
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The number of square units that cover the rectangle. Area counts how many unit squares fit inside.
The number of square units that cover the rectangle. Area counts how many unit squares fit inside.
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What is the area of a rectangle with side lengths $13$ and $1$ unit?
What is the area of a rectangle with side lengths $13$ and $1$ unit?
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$13$ square units. Any number times 1 equals itself.
$13$ square units. Any number times 1 equals itself.
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A rectangle is $10$ units long and $3$ units wide. What is its area?
A rectangle is $10$ units long and $3$ units wide. What is its area?
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$30$ square units. Multiply length by width: $10 \times 3 = 30$.
$30$ square units. Multiply length by width: $10 \times 3 = 30$.
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A rug is $5$ ft by $7$ ft. What is its area in square feet?
A rug is $5$ ft by $7$ ft. What is its area in square feet?
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$35\ \text{ft}^2$. Multiply dimensions: $5 \times 7 = 35$.
$35\ \text{ft}^2$. Multiply dimensions: $5 \times 7 = 35$.
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Choose the correct statement: If $l = 6$ and $w = 4$, then $A = 6 + 4$ or $A = 6 \times 4$?
Choose the correct statement: If $l = 6$ and $w = 4$, then $A = 6 + 4$ or $A = 6 \times 4$?
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$A = 6 \times 4$. Area uses multiplication, not addition.
$A = 6 \times 4$. Area uses multiplication, not addition.
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Find and correct the error: A student says a $3$ by $9$ rectangle has area $12$ square units.
Find and correct the error: A student says a $3$ by $9$ rectangle has area $12$ square units.
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Correct area: $27$ square units. Student added instead of multiplying: $3 \times 9 = 27$.
Correct area: $27$ square units. Student added instead of multiplying: $3 \times 9 = 27$.
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