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compare and order decimals
Arrange 3.25, 3.205 and 3.52 in ascending order.
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The pattern behind it: Decimals and percentages
Keep place values and the whole visible while scaling decimals or finding a percentage.
In this one. Trailing zeros do not change a decimal’s value; they help align matching place-value columns.
How to spot it
The question offers two possible units for the same kind of measurement, such as cm or km, or asks to read a time or a percentage from a picture.
Common mistake
Children pick the unit that sounds familiar rather than the one that fits the object's size, or read a clock's hour and minute hands the wrong way round.
Try one like it
Standard add decimals Calculate 3.25 + 1.875.The 33 problem patterns
All 33 patterns, one to a page — the 19 behind Primary 5 and 6 word problems, and the skills the younger years are built on. The bar model, how to spot it in the question, and the mistake children make. A booklet you can print. Free.
A PDF, and a note when new solutions go up.