Recognize when symbols stand for numbers that are unknown or can change, and explain how they are used.
Standards are described in our own words. Ontario repeats its expectation codes in every grade, so ours put the grade first: 3.B1.2 is Grade 3’s B1.2, and K.A6.1 is Kindergarten’s A6.1. Read the official Ontario document.
© Queen’s Printer for Ontario, 2020 (Grades 1–8 Mathematics) and King’s Printer for Ontario, 2026 (Kindergarten). Codes from the Ontario curriculum; descriptions rewritten in our own words. The Ontario Ministry of Education does not endorse this site.
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Each worksheet is matched to the skills it practices, and this standard to the skills it asks for. Everything here shares at least one of them. All of it is free to print and use.
