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Flooring worksheet

Grades 4–6 · CCSS 4.MD.A.3, 6.RP.A.3.c

Solve each problem and show your work. Round answers to 2 decimal places where needed.

1.
Problem 1.
- Floor size: Known total area
- Total floor area: 260 ft²
- Layout and waste: Straight lay (10% waste)
- Coverage per box: 24 ft²
- Price per ft²: $3
Find: Boxes to buy
Answer
2.
Problem 2.
- Floor size: Room dimensions (up to 3 rooms)
- Room 1 length: 12 ft
- Room 1 width: 8 ft
- Layout and waste: Straight lay (10% waste)
- Coverage per box: 24 ft²
- Price per ft²: $4.20
Find: Boxes to buy
Answer
3.
Problem 3.
- Floor size: Known total area
- Total floor area: 225 ft²
- Layout and waste: Diagonal lay (15% waste)
- Coverage per box: 18 ft²
- Price per ft²: $3.40
Find: Boxes to buy
Answer
4.
Problem 4.
- Floor size: Room dimensions (up to 3 rooms)
- Room 1 length: 16 ft
- Room 1 width: 12 ft
- Layout and waste: Straight lay (10% waste)
- Coverage per box: 32 ft²
- Price per ft²: $4
Find: Boxes to buy
Answer
5.
Problem 5.
- Floor size: Known total area
- Total floor area: 250 ft²
- Layout and waste: Straight lay (10% waste)
- Coverage per box: 25 ft²
- Price per ft²: $3.50
Find: Boxes to buy
Answer
6.
Problem 6.
- Floor size: Room dimensions (up to 3 rooms)
- Room 1 length: 16 ft
- Room 1 width: 14 ft
- Layout and waste: Straight lay (10% waste)
- Coverage per box: 22 ft²
- Price per ft²: $3.50
Find: Boxes to buy
Answer
7.
Problem 7.
- Floor size: Room dimensions (up to 3 rooms)
- Room 1 length: 16 ft
- Room 1 width: 11 ft
- Layout and waste: Straight lay (10% waste)
- Coverage per box: 28 ft²
- Price per ft²: $2
Find: Boxes to buy
Answer
8.
Problem 8.
- Floor size: Room dimensions (up to 3 rooms)
- Room 1 length: 14 ft
- Room 1 width: 13 ft
- Layout and waste: Custom waste %
- Waste allowance: 10%
- Coverage per box: 28 ft²
- Price per ft²: $3.60
Find: Boxes to buy
Answer
9.
Problem 9.
- Floor size: Room dimensions (up to 3 rooms)
- Room 1 length: 19 ft
- Room 1 width: 8 ft
- Layout and waste: Straight lay (10% waste)
- Coverage per box: 16 ft²
- Price per ft²: $3.80
Find: Boxes to buy
Answer
10.
Problem 10.
- Floor size: Known total area
- Total floor area: 180 ft²
- Layout and waste: Diagonal lay (15% waste)
- Coverage per box: 18 ft²
- Price per ft²: $2.60
Find: Boxes to buy
Answer

Answer key: Flooring worksheet

1. Boxes to buy: 12
1. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $260 \times 1 + 0.1$ $= 286 ft²$
2. Divide by the 24 ft² in each box, then round up, because stores sell whole boxes
  $\frac{286}{24}$ $= 11.9167$ $= rounded up: 12$
3. Find the cost: the area in the boxes you buy times the price per ft²
  $288 \times $3.00$ $= $864.00$
2. Boxes to buy: 5
1. Find the floor area: length times width
  $12 \times 8$ $= 96 ft²$
2. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $96 \times 1 + 0.1$ $= 105.6 ft²$
3. Divide by the 24 ft² in each box, then round up, because stores sell whole boxes
  $\frac{105.6}{24}$ $= 4.4$ $= rounded up: 5$
4. Find the cost: the area in the boxes you buy times the price per ft²
  $120 \times $4.20$ $= $504.00$
3. Boxes to buy: 15
1. Add 15% extra, because some planks get cut and leftover pieces can't always be used
  $225 \times 1 + 0.15$ $= 258.75 ft²$
2. Divide by the 18 ft² in each box, then round up, because stores sell whole boxes
  $\frac{258.75}{18}$ $= 14.375$ $= rounded up: 15$
3. Find the cost: the area in the boxes you buy times the price per ft²
  $270 \times $3.40$ $= $918.00$
4. Boxes to buy: 7
1. Find the floor area: length times width
  $16 \times 12$ $= 192 ft²$
2. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $192 \times 1 + 0.1$ $= 211.2 ft²$
3. Divide by the 32 ft² in each box, then round up, because stores sell whole boxes
  $\frac{211.2}{32}$ $= 6.6$ $= rounded up: 7$
4. Find the cost: the area in the boxes you buy times the price per ft²
  $224 \times $4.00$ $= $896.00$
5. Boxes to buy: 11
1. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $250 \times 1 + 0.1$ $= 275 ft²$
2. Divide by the 25 ft² in each box, then round up, because stores sell whole boxes
  $\frac{275}{25}$ $= 11$ $= rounded up: 11$
3. Find the cost: the area in the boxes you buy times the price per ft²
  $275 \times $3.50$ $= $962.50$
6. Boxes to buy: 12
1. Find the floor area: length times width
  $16 \times 14$ $= 224 ft²$
2. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $224 \times 1 + 0.1$ $= 246.4 ft²$
3. Divide by the 22 ft² in each box, then round up, because stores sell whole boxes
  $\frac{246.4}{22}$ $= 11.2$ $= rounded up: 12$
4. Find the cost: the area in the boxes you buy times the price per ft²
  $264 \times $3.50$ $= $924.00$
7. Boxes to buy: 7
1. Find the floor area: length times width
  $16 \times 11$ $= 176 ft²$
2. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $176 \times 1 + 0.1$ $= 193.6 ft²$
3. Divide by the 28 ft² in each box, then round up, because stores sell whole boxes
  $\frac{193.6}{28}$ $= 6.9143$ $= rounded up: 7$
4. Find the cost: the area in the boxes you buy times the price per ft²
  $196 \times $2.00$ $= $392.00$
8. Boxes to buy: 8
1. Find the floor area: length times width
  $14 \times 13$ $= 182 ft²$
2. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $182 \times 1 + 0.1$ $= 200.2 ft²$
3. Divide by the 28 ft² in each box, then round up, because stores sell whole boxes
  $\frac{200.2}{28}$ $= 7.15$ $= rounded up: 8$
4. Find the cost: the area in the boxes you buy times the price per ft²
  $224 \times $3.60$ $= $806.40$
9. Boxes to buy: 11
1. Find the floor area: length times width
  $19 \times 8$ $= 152 ft²$
2. Add 10% extra, because some planks get cut and leftover pieces can't always be used
  $152 \times 1 + 0.1$ $= 167.2 ft²$
3. Divide by the 16 ft² in each box, then round up, because stores sell whole boxes
  $\frac{167.2}{16}$ $= 10.45$ $= rounded up: 11$
4. Find the cost: the area in the boxes you buy times the price per ft²
  $176 \times $3.80$ $= $668.80$
10. Boxes to buy: 12
1. Add 15% extra, because some planks get cut and leftover pieces can't always be used
  $180 \times 1 + 0.15$ $= 207 ft²$
2. Divide by the 18 ft² in each box, then round up, because stores sell whole boxes
  $\frac{207}{18}$ $= 11.5$ $= rounded up: 12$
3. Find the cost: the area in the boxes you buy times the price per ft²
  $216 \times $2.60$ $= $561.60$