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Addition and subtraction: numbers to 100 and 1,000
This guide provides a sequence of steps for exploring and developing addition and subtraction strategies, including an emphasis on not crossing 10s and 100s and crossing 10s and 100s.
Additional details |
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Year level(s) | Year 2, Year 3, Year 4, Year 5, Year 6 |
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Audience | Teacher |
Purpose | Teaching resource, Teaching strategies |
Format | Downloadable resources |
Teaching strategies and pedagogical approaches | Questioning, Concrete Representational Abstract model, Explicit teaching |
Keywords | add, subtract, addition, subtraction, multiples of 100, bar model, part-whole model, reasoning, problem-solving, number tracks,, calculations, place value, place value grid, 2-digit numbers, 3-digit numbers, base 10 blocks, explicit teaching |
Curriculum alignment |
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Curriculum connections | Numeracy |
Strand and focus | Number, Build understanding |
Topics | Addition and subtraction, Place value, Operating with number |
AC: Mathematics content descriptions |
ACMNA030
Solve simple addition and subtraction problems using a range of efficient mental and written strategies
ACMNA055
Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation
ACMNA073
Apply place value to partition, rearrange and regroup numbers to at least tens of thousands to assist calculations and solve problems
ACMNA099
Use estimation and rounding to check the reasonableness of answers to calculations
ACMNA291
Use efficient mental and written strategies and apply appropriate digital technologies to solve problems
ACMNA123
Select and apply efficient mental and written strategies and appropriate digital technologies to solve problems involving all four operations with whole numbers
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National numeracy learning progression |
Additive strategies
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AdS7, AdS8
Quantifying numbers - QuN8, QuN9 |
Copyright details |
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Organisation | White Rose Maths |
Copyright | © 2021 White Rose Maths. Free-for-education material. |
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