Find Rectangle Area by Tiling - 3rd Grade Math
Card 1 of 15
Identify the width of a rectangle with area $28$ and length $7$.
Identify the width of a rectangle with area $28$ and length $7$.
Tap to reveal answer
$4$. Divide area by length: $28 \div 7 = 4$.
$4$. Divide area by length: $28 \div 7 = 4$.
← Didn't Know|Knew It →
What is the area of a rectangle with side lengths $10$ units and $1$ unit?
What is the area of a rectangle with side lengths $10$ units and $1$ unit?
Tap to reveal answer
$10 \text{ square units}$. Multiply: $10 \times 1 = 10$.
$10 \text{ square units}$. Multiply: $10 \times 1 = 10$.
← Didn't Know|Knew It →
Which option is the correct area for a $3$-by-$5$ rectangle: $8$, $15$, or $30$ square units?
Which option is the correct area for a $3$-by-$5$ rectangle: $8$, $15$, or $30$ square units?
Tap to reveal answer
$15 \text{ square units}$. Calculate: $3 \times 5 = 15$.
$15 \text{ square units}$. Calculate: $3 \times 5 = 15$.
← Didn't Know|Knew It →
Find and correct the unit error: "The area is $12 \text{ units}$" for a rectangle.
Find and correct the unit error: "The area is $12 \text{ units}$" for a rectangle.
Tap to reveal answer
Correct: $12 \text{ square units}$. Area must use square units, not just units.
Correct: $12 \text{ square units}$. Area must use square units, not just units.
← Didn't Know|Knew It →
What is the area of a rectangle with side lengths $2$ units and $9$ units?
What is the area of a rectangle with side lengths $2$ units and $9$ units?
Tap to reveal answer
$18 \text{ square units}$. Multiply: $2 \times 9 = 18$.
$18 \text{ square units}$. Multiply: $2 \times 9 = 18$.
← Didn't Know|Knew It →
Which statement correctly shows that tiling and multiplying give the same area for a $4$-by-$6$ rectangle?
Which statement correctly shows that tiling and multiplying give the same area for a $4$-by-$6$ rectangle?
Tap to reveal answer
$4 \times 6 = 24$ tiles, so area is $24 \text{ square units}$. Shows tiling and multiplication give same result.
$4 \times 6 = 24$ tiles, so area is $24 \text{ square units}$. Shows tiling and multiplication give same result.
← Didn't Know|Knew It →
Identify the area of a rectangle with $4$ columns and $4$ rows of $1 \text{ square unit}$ tiles.
Identify the area of a rectangle with $4$ columns and $4$ rows of $1 \text{ square unit}$ tiles.
Tap to reveal answer
$16 \text{ square units}$. A square has equal sides: $4 \times 4 = 16$.
$16 \text{ square units}$. A square has equal sides: $4 \times 4 = 16$.
← Didn't Know|Knew It →
What is the area of a rectangle measured in when using $1 \text{ square unit}$ tiles?
What is the area of a rectangle measured in when using $1 \text{ square unit}$ tiles?
Tap to reveal answer
Square units (number of $1 \text{ square unit}$ tiles). Each tile represents one square unit of area.
Square units (number of $1 \text{ square unit}$ tiles). Each tile represents one square unit of area.
← Didn't Know|Knew It →
What is the area of a rectangle that is $8$ units long and $4$ units wide?
What is the area of a rectangle that is $8$ units long and $4$ units wide?
Tap to reveal answer
$32 \text{ square units}$. Multiply: $8 \times 4 = 32$.
$32 \text{ square units}$. Multiply: $8 \times 4 = 32$.
← Didn't Know|Knew It →
Identify the missing side length if a rectangle has area $24$ and width $6$.
Identify the missing side length if a rectangle has area $24$ and width $6$.
Tap to reveal answer
$4$. Divide area by width: $24 \div 6 = 4$.
$4$. Divide area by width: $24 \div 6 = 4$.
← Didn't Know|Knew It →
Identify the missing side length if a rectangle has area $18$ and length $3$.
Identify the missing side length if a rectangle has area $18$ and length $3$.
Tap to reveal answer
$6$. Divide area by length: $18 \div 3 = 6$.
$6$. Divide area by length: $18 \div 3 = 6$.
← Didn't Know|Knew It →
What is the area of a rectangle with $7$ rows and $2$ tiles in each row?
What is the area of a rectangle with $7$ rows and $2$ tiles in each row?
Tap to reveal answer
$14 \text{ square units}$. Multiply: $7 \times 2 = 14$.
$14 \text{ square units}$. Multiply: $7 \times 2 = 14$.
← Didn't Know|Knew It →
What is the formula for the area of a rectangle with side lengths $\ell$ and $w$?
What is the formula for the area of a rectangle with side lengths $\ell$ and $w$?
Tap to reveal answer
$A = \ell \times w$. Multiply length times width to find area.
$A = \ell \times w$. Multiply length times width to find area.
← Didn't Know|Knew It →
What does it mean to find area by tiling a rectangle with $1 \text{ square unit}$ tiles?
What does it mean to find area by tiling a rectangle with $1 \text{ square unit}$ tiles?
Tap to reveal answer
Cover it with no gaps or overlaps, then count the tiles. Tiling means placing unit squares to fill the shape.
Cover it with no gaps or overlaps, then count the tiles. Tiling means placing unit squares to fill the shape.
← Didn't Know|Knew It →
Find the area of a rectangle that is $9$ units by $3$ units.
Find the area of a rectangle that is $9$ units by $3$ units.
Tap to reveal answer
$27 \text{ square units}$. Multiply: $9 \times 3 = 27$.
$27 \text{ square units}$. Multiply: $9 \times 3 = 27$.
← Didn't Know|Knew It →