SEAGReady
MeasurementP7 level23 questions in the full course

Convert Units with DecimalsSEAG Practice Questions

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

What your child needs to know

SEAGReady breaks convert units with decimals into 3 steps, taught in order so each skill builds on the last.

  1. 1

    Decimal × 100 Conversion

    Convert decimal measurements to smaller units by multiplying by 100 (e.g., 1.5 m to cm, 2.3 m to cm)

  2. 2

    Decimal × 1000 Conversion

    Convert decimal measurements using multiplication by 1000 (e.g., 2.5 kg to g, 1.25 L to mL, 1.5 km to m)

  3. 3

    Division for Larger Units

    Convert decimal measurements to larger units using division (e.g., 250 cm to m, 1500 g to kg, 500 mL to L)

Try these SEAG-style questions

Three free sample questions from our convert units with decimals course. Every question comes with a full explanation, and hints that guide without giving the answer away.

Question 1Confidence builder

Sean's ribbon length is shown. How many centimetres long is it?

A conversion flow shows a ribbon length of 2.5 metres and asks for the same length in centimetres.
Answer choices for question 1
Question 2Confidence builder

Abigail's flour mass is shown. How many grams of flour does she need?

A conversion flow shows 2.5 kilograms of flour and asks for the same mass in grams.
Answer choices for question 2
Question 3Confidence builder

The bookshelf's height is shown. What is this height in metres?

A conversion flow shows a bookshelf height of 150 centimetres and asks for the same height in metres.
Answer choices for question 3

Try the lesson: Decimal × 100 Conversion

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

Recall the conversion factor
1

1 metre = 100 centimetres

Step 1 of 4

Prefer to read? See every step written out

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. 1

    Recall the conversion factor

    • 1 metre = 100 centimetres
    • To convert m to cm, multiply by 100
  2. 2

    Multiply the decimal by 100

    • Each digit shifts two place-value columns left
    • Calculate the result1.5 × 100 = 150

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.

Mistakes to watch for

These are the misconceptions we see most often in convert units with decimals, including the ones our practice questions are specifically designed to catch.

  • Shifting digits the wrong number of place-value columns when multiplying by 1000
  • Forgetting to include trailing zeros (1.5 m = 150 cm, not 15 cm)

Build these skills first

Struggling with convert units with decimals? The real gap is often in one of these earlier topics.

Convert Length UnitsMultiply Decimals by Whole Numbers

More measurement practice

Know Metric Unit NamesUnderstand Metric PrefixesConvert Mass UnitsConvert Capacity UnitsChoose Appropriate UnitsRead Positive Temperatures
23 questions on this topic alone

Master convert units with decimals and everything it unlocks

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.

Start free

Free to start · no card needed