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P3 Large numbers and operation order

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

write a numeral

Write “six thousand three hundred five” in numerals.

One step of the worked solution to write a numeral, drawn in pencil.
5 steps, drawn in pencil

See all 5 steps

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The pattern behind it: Large numbers and operation order

Group digits by place value, then do brackets and multiplication or division before addition or subtraction.

In this one. A missing named place is represented by zero in the numeral.

Order changes the resultno bracketsmultiply before adding: 90bracketsbrackets first: 378

How to spot it

Two numbers to add with carrying, several numbers to put in order, or a sum mixing addition, multiplication and brackets, all point here.

Common mistake

Children forget to carry a ten into the next column, or compare digits from the left without first checking the numbers have the same number of digits.

Try one like it

Standard add two-digit numbers mentally Calculate 94 + 38 mentally.
All 30 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.