Calculating the volume of cuboids using length × width × height, with answers in cubic units (cm³, m³).
Where your child meets this in real life: Working out how much water a fish tank holds or how many boxes fit in a shipping container
SEAGReady breaks volume of cuboids into 3 steps, taught in order so each skill builds on the last.
Calculate volume of a cuboid using V = length x width x height with simple whole numbers
Calculate volume when dimensions include two-digit numbers requiring multi-step multiplication
Extract dimensions from word problems and real-world contexts to calculate cuboid volume
Three free sample questions from our volume of cuboids course. Every question comes with a full explanation, and hints that guide without giving the answer away.
Ciara has a small gift box that measures 5 cm long, 3 cm wide, and 2 cm high. What is the volume of the box?
Answer: A. 30 cm³
To find the volume of a cuboid: Step 1: Identify the dimensions Length = 5 cm, Width = 3 cm, Height = 2 cm Step 2: Use the formula Volume = length x width x height 5 x 3 x 2 = 30 Step 3: Write the answer with cubic units Volume = 30 cm³
Stuck? Start here: Volume measures how much space is inside a 3D shape.
A toy storage box measures 10 cm long, 8 cm wide, and 5 cm high. Calculate the volume of the box.
Answer: A. 400 cm³
To find the volume: Step 1: Multiply the first two dimensions 10 x 8 = 80 Step 2: Multiply by the height 80 x 5 = 400 Step 3: Write with cubic units Volume = 400 cm³
Stuck? Start here: Volume needs all three dimensions multiplied together.
Conor is buying a fish tank for his goldfish. The tank is 25 cm long, 20 cm wide, and 15 cm tall. What is the volume of the fish tank?
Answer: B. 7500 cm³
Finding the volume of the fish tank: Step 1: Identify dimensions from the problem Length = 25 cm, Width = 20 cm, Height = 15 cm Step 2: Calculate in stages 25 x 20 = 500 500 x 15 = 7500 Step 3: Write with units Volume = 7500 cm³
Stuck? Start here: First, identify the length, width, and height from the problem.
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Aoife has a jewellery box that measures 4 cm long, 3 cm wide, and 2 cm high.
What is the volume of the box?
4 × 3 × 2
Step 1 of 4
Aoife has a jewellery box that measures 4 cm long, 3 cm wide, and 2 cm high.
What is the volume of the box?
The volume of Aoife's jewellery box is 24 cm³.
The key insight: Volume is like area, but with a third dimension - you're counting how many unit cubes fit inside!
Watch out: 4 × 3 = 12 cm². That's only the area of the base. Volume needs all THREE dimensions multiplied together.
These are the misconceptions we see most often in volume of cuboids, including the ones our practice questions are specifically designed to catch.
Struggling with volume of cuboids? The real gap is often in one of these earlier topics.
SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.