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P4–P5–P6 Growing patterns and tables

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PSLE 2024 — Repeating digits 2041

The digits 2, 0, 4, 1 repeat to form the sequence 2, 0, 4, 1, 2, 0, 4, 1, ... The digits used add up to 230. How many digits are there altogether?

One step of the worked solution to PSLE 2024 — Repeating digits 2041, drawn in pencil.
7 steps, drawn in pencil

See all 7 steps

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65 worked examples are free without a code, two from every pattern. No account, either way.

The pattern behind it: Growing patterns and tables

Find the rule, so Figure 250 is no harder than Figure 4.

In this one. A repeating pattern is a block with a fixed value — divide the total by the block value, and the remainder tells you how far into the next block to walk, digit by digit.

The first threeeach one adds 3Figure 14Figure 2+3Figure 3+3Any figure3n + 1Figure nFigure 250 = 751

How to spot it

A row of figures or a table of numbers is shown for the first few terms only, and the question asks for a term far further along, such as 'Figure 6' or 'Figure 250'.

Common mistake

Children extend the sequence one term at a time by drawing or counting. Finding the fixed step or relationship lets them jump straight to the term asked for.

More on 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.