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P2 Decimals and percentages

Today’s problem — free all day, every step. Every day has one.

read decimal money notation

Write 425 cents using dollar notation.

One step of the worked solution to read decimal money notation, drawn in pencil.
5 steps, drawn in pencil

See all 5 steps

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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. Dollar notation always shows two cent places.

35% means 35 out of 100whole35% of 200 = 70

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 choose a measurement unit Choose the suitable abbreviation for a child’s mass: kg or mL?
All 28 with this pattern →

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.