Learn the 3-Step Method
1Pad with zeros.
Give every decimal the same number of decimal places.
2Compare from the left.
Order them place by place, like a dictionary orders words.
3Write the original numbers.
Give your answer using the numbers as they were written.
Worked Example
Order 2.3, 2.09, 2.31 and 2.9 from smallest to largest.
Watch Out! Common Mistakes
Wrong! More digits isn’t bigger. 2.09 < 2.90 — compare tenths: 0 vs 9.
Careful! With 4+ numbers it’s easy to drop one. Count your answer list — it must match the question.
Check the question! This is largest-to-smallest. If it asks smallest-to-largest, reverse it.
⬇ Cheat Sheet
- Pad every decimal to the same number of places.
- Compare digit by digit from the left.
- Order them, then write the original forms.
- Count your list matches the question.
📖 Continue Your Journey
Quick summary
- Pad every decimal to the same number of decimal places first.
- Then compare digit by digit from the left, like alphabetical order.
- Write your final answer using the numbers' original forms.
- Check the direction: smallest-to-largest or largest-to-smallest.
Frequently asked questions
How do you order decimals with different numbers of digits?
Pad them all to the same number of decimal places with zeros — 0.5 becomes 0.500 — then order them like whole numbers of thousandths.
Does adding zeros change a decimal?
No. Zeros at the end of the decimal part change nothing: 0.5 = 0.50 = 0.500. They only make comparing easier.
Why is this skill tested so often in the 11+?
Because it exposes whether a child truly understands place value or is just reading digits. The pad-with-zeros habit shows genuine understanding.
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