Place value in action
Comparing two-digit numbers is really a place value question: which has more tens? Pair this page with place value worksheets.In the Australian Curriculum
- FoundationComparing collections to at least 20 by counting, and explaining or showing how you know (AC9MFN03).
- Year 1Recognising, representing and ordering numbers to at least 120 (AC9M1N01).
- Year 2Ordering and representing numbers to at least 1000.
- Year 3Ordering numbers beyond 10 000, which goes past the range of this maker.
The Foundation description is about comparing real collections and explaining your thinking. Before the symbols, have children build both numbers with counters or MAB and say which has more and why. The < and > signs then become a way to record what they found.
In Year 1 the number range goes to at least 120, so once numbers to 100 are secure, write a few pairs like 109 and 112 on the board to stretch the same tens-first thinking.
Summarised in our own words from the Australian Curriculum: Mathematics, Version 9.0 (ACARA).