Converting metric units involving decimal values up to two decimal places (e.g., 2.75 m to cm, 1.25 kg to g).
Where your child meets this in real life: Calculating exact measurements for recipes or DIY projects
Each SEAG paper has 28 maths questions. Questions 29 to 50 are multiple choice with five possible answers, and questions 51 to 56 need a short written answer. With 56 questions in 60 minutes across English and maths, that is about a minute per question.
SEAGReady breaks convert units with decimals into 3 steps, taught in order so each skill builds on the last.
Convert decimal measurements to smaller units by multiplying by 100 (e.g., 1.5 m to cm, 2.3 m to cm)
Convert decimal measurements using multiplication by 1000 (e.g., 2.5 kg to g, 1.25 L to mL, 1.5 km to m)
Convert decimal measurements to larger units using division (e.g., 250 cm to m, 1500 g to kg, 500 mL to L)
Try three free questions from our convert units with decimals course. They start easy and get harder, so you can see where your child's confidence runs out. If they manage the last one without a hint, this topic is probably secure. If not, the steps above show where to start.
Sean's ribbon length is shown. How many centimetres long is it?
The amount of water in the bottle is shown. How many millilitres is this?
Adam's two pieces of string are shown. What is their total length in metres?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Chloe is measuring fabric for a school project. She has a piece that is 1.5 metres long.
How many centimetres long is the fabric?
1.5 m = ? cm
1 metre = 100 centimetres
Step 1 of 4
Chloe is measuring fabric for a school project. She has a piece that is 1.5 metres long.
How many centimetres long is the fabric?
The fabric is 150 cm long.
The key insight: Multiplying by 100 shifts every digit two place-value columns to the left!
Common mix-up: 1.5 m = 15 cm. Multiplying by 10 gives 15 cm, but the conversion requires multiplying by 100.
These are the misconceptions we see most often in convert units with decimals, including the ones our practice questions are specifically designed to catch.
Struggling with convert units with decimals? The real gap is often in one of these earlier topics.
Sitting the SEAG test this November? Read our last-month revision plan, Paper 1 vs Paper 2 and test day guide.
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.
Free to start · no card needed