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Place value: numbers to 20, 50 and 100
This guide provides a sequence of steps for building place value understanding, from exploring two-digit numbers in terms of their parts through to fostering reasoning and problem-solving with worded problems.
|Year level(s)||Year 1, Year 2|
|Purpose||Teaching resource, Teaching strategies|
|Teaching strategies and pedagogical approaches||Questioning, Concrete Representational Abstract model, Explicit teaching|
|Keywords||place value, place value chart, base 10, counting, comparing numbers, ordering numbers, skip-counting, number line, ten frame, reasoning, problem-solving, explicit teaching|
|Strand and focus||Number, Build understanding|
|Topics||Addition and subtraction, Place value|
|AC: Mathematics content descriptions||
ACMNA012 Develop confidence with number sequences to and from 100 by ones from any starting point. Skip count by twos, fives and tens starting from zero
ACMNA013 Recognise, model, read, write and order numbers to at least 100. Locate these numbers on a number line
ACMNA014 Count collections to 100 by partitioning numbers using place value
ACMNA015 Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts
ACMNA026 Investigate number sequences, initially those increasing and decreasing by twos, threes, fives and tens from any starting point, then moving to other sequences
ACMNA030 Solve simple addition and subtraction problems using a range of efficient mental and written strategies
|National numeracy learning progression||
Quantifying numbers - QuN5, QuN6, QuN7
Multiplicative strategies - MuS3, MuS2, MuS4
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