Recognise and explain the connection between addition and subtraction as inverse operations, apply to partition numbers and find unknown values in number sentences

Content descriptor

Recognise and explain the connection between addition and subtraction as inverse operations, apply to partition numbers and find unknown values in number sentences.

Code

AC9M3A01

Year level

Year 3

Subject

Mathematics

Strand

Algebra

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Learning intention

We are learning to recognise and explain the connection between addition and subtraction as inverse operations, apply to partition numbers and find unknown values in number sentences.

Cloze sentence

Recognise and explain the connection between addition and   as inverse operations, apply to partition numbers and find unknown values in number sentences.

Related Year 3 Mathematics descriptors

• AC9M3A02Extend and apply knowledge of addition and subtraction facts to 20 to develop efficient mental strategies for computation with larger numbers without a calculator
• AC9M3A03Recall and demonstrate proficiency with multiplication facts for \(3, 4, 5\) and \(10\); extend and apply facts to develop the related division facts
• AC9M3M01Identify which metric units are used to measure everyday items; use measurements of familiar items and known units to make estimates
• AC9M3M02Measure and compare objects using familiar metric units of length, mass and capacity, and instruments with labelled markings
• AC9M3M03Recognise and use the relationship between formal units of time including days, hours, minutes and seconds to estimate and compare the duration of events
• AC9M3M04Describe the relationship between the hours and minutes on analog and digital clocks, and read the time to the nearest minute
• AC9M3M05Identify angles as measures of turn and compare angles with right angles in everyday situations
• AC9M3M06Recognise the relationships between dollars and cents and represent money values in different ways

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