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Elaboration ACMNA051

identifying even numbers using skip counting by twos or by grouping even collections of objects in twos

Elaboration (1) ACMNA051

explaining why all numbers that end in the digits 0, 2, 4, 6 and 8 are even and that numbers ending in 1, 3, 5, 7 and 9 are odd

Elaboration ACMNA052

placing four-digit numbers on a number line using an appropriate scale

Elaboration (1) ACMNA052

reproducing numbers in words using their numerical representations and vice versa

Elaboration ACMNA053

recognising that 10 000 equals 10 thousands, 100 hundreds, 1000 tens and 10 000 ones

Elaboration (1) ACMNA053

justifying choices about partitioning and regrouping numbers in terms of their usefulness for particular calculations

Elaboration ACMNA054

demonstrating the connection between addition and subtraction using partitioning or by writing equivalent number sentences

Elaboration ACMNA055

recognising that certain single-digit number combinations always result in the same answer for addition and subtraction, and using this knowledge for addition and subtraction of larger numbers

Elaboration (1) ACMNA055

combining knowledge of addition and subtraction facts and partitioning to aid computation (for example 57 + 19 = 57 + 20 – 1)

Elaboration ACMNA056

establishing multiplication facts using number sequences

Elaboration ACMNA057

writing simple word problems in numerical form and vice versa

Elaboration (1) ACMNA057

using a calculator to check the solution and reasonableness of the answer

partitioning areas, lengths and collections to create halves, thirds, quarters and fifths, such as folding the same sized sheets of paper to illustrate different unit fractions and comparing the number of parts with their sizes

Elaboration (1) ACMNA058

locating unit fractions on a number line

Elaboration (2) ACMNA058

recognising that in English the term ‘one third’ is used (order: numerator, denominator) but that in other languages this concept may be expressed as ‘three parts, one of them’ (order: denominator, numerator) for example Japanese

Elaboration ACMNA059

recognising the relationship between dollars and cents, and that not all countries use these denominations and divisions (for example Japanese Yen)

Elaboration ACMNA060

identifying and writing the rules for number patterns

Elaboration (1) ACMNA060

describing a rule for a number pattern, then creating the pattern

Elaboration ACMMG061

recognising the importance of using common units of measurement

Elaboration (1) ACMMG061

recognising and using centimetres and metres, grams and kilograms, and millilitres and litres

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