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Topsoil worksheet

Grades 6–7 · CCSS 6.G.A.2, 6.RP.A.3.d

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

  1. Problem 1.
    • Units: Metric (meters, cm)
    • Area to cover: Length × width
    • Length: 8 m
    • Width: 3 m
    • Depth of topsoil: 15 cm
    • Bag size: 25 L
    • Extra for settling and grading: 0%
    • Soil bulk density (for weight): 1 g/cm³

    Find: Topsoil to order

  2. Problem 2.
    • Units: US (feet, inches)
    • Area to cover: Length × width
    • Length: 18 ft
    • Width: 11 ft
    • Depth of topsoil: 3 in
    • Bag size: 1.5 ft³
    • Extra for settling and grading: 10%
    • Soil bulk density (for weight): 1.4 g/cm³

    Find: Topsoil to order

  3. Problem 3.
    • Units: Metric (meters, cm)
    • Area to cover: Total area
    • Area: 16 m²
    • Depth of topsoil: 15 cm
    • Bag size: 20 L
    • Extra for settling and grading: 0%
    • Soil bulk density (for weight): 1.3 g/cm³

    Find: Topsoil to order

  4. Problem 4.
    • Units: US (feet, inches)
    • Area to cover: Total area
    • Area: 250 ft²
    • Depth of topsoil: 4 in
    • Bag size: 1 ft³
    • Extra for settling and grading: 15%
    • Soil bulk density (for weight): 1.8 g/cm³

    Find: Topsoil to order

  5. Problem 5.
    • Units: Metric (meters, cm)
    • Area to cover: Total area
    • Area: 15 m²
    • Depth of topsoil: 30 cm
    • Bag size: 40 L
    • Extra for settling and grading: 20%
    • Soil bulk density (for weight): 1.4 g/cm³

    Find: Topsoil to order

  6. Problem 6.
    • Units: US (feet, inches)
    • Area to cover: Total area
    • Area: 145 ft²
    • Depth of topsoil: 3 in
    • Bag size: 1.5 ft³
    • Extra for settling and grading: 10%
    • Soil bulk density (for weight): 1.3 g/cm³

    Find: Topsoil to order

  7. Problem 7.
    • Units: US (feet, inches)
    • Area to cover: Length × width
    • Length: 20 ft
    • Width: 10 ft
    • Depth of topsoil: 2 in
    • Bag size: 0.75 ft³
    • Extra for settling and grading: 5%
    • Soil bulk density (for weight): 1.3 g/cm³

    Find: Topsoil to order

  8. Problem 8.
    • Units: Metric (meters, cm)
    • Area to cover: Length × width
    • Length: 7 m
    • Width: 3 m
    • Depth of topsoil: 30 cm
    • Bag size: 25 L
    • Extra for settling and grading: 15%
    • Soil bulk density (for weight): 1.2 g/cm³

    Find: Topsoil to order

  9. Problem 9.
    • Units: Metric (meters, cm)
    • Area to cover: Total area
    • Area: 12 m²
    • Depth of topsoil: 15 cm
    • Bag size: 25 L
    • Extra for settling and grading: 20%
    • Soil bulk density (for weight): 1.6 g/cm³

    Find: Topsoil to order

  10. Problem 10.
    • Units: Metric (meters, cm)
    • Area to cover: Length × width
    • Length: 5 m
    • Width: 4 m
    • Depth of topsoil: 5 cm
    • Bag size: 20 L
    • Extra for settling and grading: 15%
    • Soil bulk density (for weight): 1 g/cm³

    Find: Topsoil to order

Answer key: Topsoil worksheet

  1. 1. Topsoil to order: 3.6 m³

    1. Multiply length by width to get the area

      8×3=24 m²
    2. Multiply the area by the depth to get the volume, changing cm to meters first (÷ 100)

      24×15100=3.6 m³
    3. Add 0% extra, because loose soil settles after it is spread

      3.6×1+0100=3.6 m³
    4. Divide the liters by the bag size. Round up, since you can't buy part of a bag

      3.6×1,00025=144
    5. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      3.6×1×1,000=3,600 kg
  2. 2. Topsoil to order: 2.02 yd³

    1. Multiply length by width to get the area

      18×11=198 ft²
    2. Multiply the area by the depth to get the volume, changing inches to feet first (÷ 12)

      198×312=49.5 ft³
    3. Add 10% extra, because loose soil settles after it is spread

      49.5×1+10100=54.45 ft³
    4. Divide by 27 to get cubic yards, since a cubic yard is 3 ft × 3 ft × 3 ft

      54.4527=2.016667 yd³
    5. Divide the cubic feet by the bag size. Round up, since you can't buy part of a bag

      54.451.5=36.3
    6. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      1.541852×1.4×1,000=2,158.59 kg
  3. 3. Topsoil to order: 2.4 m³

    1. Multiply the area by the depth to get the volume, changing cm to meters first (÷ 100)

      16×15100=2.4 m³
    2. Add 0% extra, because loose soil settles after it is spread

      2.4×1+0100=2.4 m³
    3. Divide the liters by the bag size. Round up, since you can't buy part of a bag

      2.4×1,00020=120
    4. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      2.4×1.3×1,000=3,120 kg
  4. 4. Topsoil to order: 3.55 yd³

    1. Multiply the area by the depth to get the volume, changing inches to feet first (÷ 12)

      250×412=83.333333 ft³
    2. Add 15% extra, because loose soil settles after it is spread

      83.333333×1+15100=95.833333 ft³
    3. Divide by 27 to get cubic yards, since a cubic yard is 3 ft × 3 ft × 3 ft

      95.83333327=3.549383 yd³
    4. Divide the cubic feet by the bag size. Round up, since you can't buy part of a bag

      95.8333331=95.8333
    5. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      2.713698×1.8×1,000=4,884.66 kg
  5. 5. Topsoil to order: 5.4 m³

    1. Multiply the area by the depth to get the volume, changing cm to meters first (÷ 100)

      15×30100=4.5 m³
    2. Add 20% extra, because loose soil settles after it is spread

      4.5×1+20100=5.4 m³
    3. Divide the liters by the bag size. Round up, since you can't buy part of a bag

      5.4×1,00040=135
    4. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      5.4×1.4×1,000=7,560 kg
  6. 6. Topsoil to order: 1.48 yd³

    1. Multiply the area by the depth to get the volume, changing inches to feet first (÷ 12)

      145×312=36.25 ft³
    2. Add 10% extra, because loose soil settles after it is spread

      36.25×1+10100=39.875 ft³
    3. Divide by 27 to get cubic yards, since a cubic yard is 3 ft × 3 ft × 3 ft

      39.87527=1.476852 yd³
    4. Divide the cubic feet by the bag size. Round up, since you can't buy part of a bag

      39.8751.5=26.5833
    5. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      1.129134×1.3×1,000=1,467.87 kg
  7. 7. Topsoil to order: 1.3 yd³

    1. Multiply length by width to get the area

      20×10=200 ft²
    2. Multiply the area by the depth to get the volume, changing inches to feet first (÷ 12)

      200×212=33.333333 ft³
    3. Add 5% extra, because loose soil settles after it is spread

      33.333333×1+5100=35 ft³
    4. Divide by 27 to get cubic yards, since a cubic yard is 3 ft × 3 ft × 3 ft

      3527=1.296296 yd³
    5. Divide the cubic feet by the bag size. Round up, since you can't buy part of a bag

      350.75=46.6667
    6. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      0.99109×1.3×1,000=1,288.42 kg
  8. 8. Topsoil to order: 7.24 m³

    1. Multiply length by width to get the area

      7×3=21 m²
    2. Multiply the area by the depth to get the volume, changing cm to meters first (÷ 100)

      21×30100=6.3 m³
    3. Add 15% extra, because loose soil settles after it is spread

      6.3×1+15100=7.245 m³
    4. Divide the liters by the bag size. Round up, since you can't buy part of a bag

      7.245×1,00025=289.8
    5. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      7.245×1.2×1,000=8,694 kg
  9. 9. Topsoil to order: 2.16 m³

    1. Multiply the area by the depth to get the volume, changing cm to meters first (÷ 100)

      12×15100=1.8 m³
    2. Add 20% extra, because loose soil settles after it is spread

      1.8×1+20100=2.16 m³
    3. Divide the liters by the bag size. Round up, since you can't buy part of a bag

      2.16×1,00025=86.4
    4. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      2.16×1.6×1,000=3,456 kg
  10. 10. Topsoil to order: 1.15 m³

    1. Multiply length by width to get the area

      5×4=20 m²
    2. Multiply the area by the depth to get the volume, changing cm to meters first (÷ 100)

      20×5100=1 m³
    3. Add 15% extra, because loose soil settles after it is spread

      1×1+15100=1.15 m³
    4. Divide the liters by the bag size. Round up, since you can't buy part of a bag

      1.15×1,00020=57.5
    5. Weight: multiply the volume in m³ by the bulk density, then by 1,000 to turn tonnes into kilograms

      1.15×1×1,000=1,150 kg