AC9M2N04
Parents start here
Your child is learning to add and subtract two-digit numbers, like 43 + 28.
- Calculate 34 + 27 using base-ten blocks or column addition
- Calculate 63 − 28 using a number line or partitioning
One skill from the map, ages 6–7 — its page has the rest of the checklist and what comes next. Candidate alignment, machine-suggested and unreviewed (v0.1).
“add and subtract one- and two-digit numbers, representing problems using number sentences and solve using part-part-whole reasoning and a variety of calculation strategies”
Official source: Australian Curriculum v9 — Mathematics ↗ · Content © ACARA, CC BY 4.0 · unofficial reference — verify at the official site
Other skills on the Learning Map matched to this code — candidate alignments, machine-suggested and unreviewed (v0.1).
high confidence11 skills
Addition and subtraction within 1000
Numbers on a number line
Representing Numbers
Two-step addition and subtraction problems
Addition and subtraction word problems
Adding numbers
Missing number problems (age 7+)
Adding and subtracting
Fluent adding and subtracting within 1000
Adding and subtracting (age 8+)
Adding and subtracting (age 7+)
46 other candidate matches — 30 medium, 16 low
medium confidence
Mental and written addition and subtraction
Mental addition and subtraction (age 6+)
Early Word Problems
Generalising Patterns
Two-Step Word Problems
Mentally adding tens to 3-digit numbers
The two digits of a two-digit number
Adding and subtracting tens mentally
Adding Three Small Numbers
Place value understanding and number facts
Fluent adding and subtracting within 100
Numbers on a number line
Representing Addition and Subtraction
Numbers up to 10 into pairs
Adding within 100
Reading and writing numbers to 100
Mentally adding hundreds to 3-digit numbers
Mental addition and subtraction (age 7+)
Comparing and ordering numbers
Ordering Numbers to 1000
Reading +, −, and = symbols
10 More or 10 Less
Comparing fractions (age 7+)
Connecting Representations
Hands-On Problem Solving
Reading and writing numbers to 120
Explaining Mathematical Reasoning
Fluent adding and subtracting within 10
Spotting mathematical patterns
Reading and writing numbers to 20
low confidence
Odd and even numbers
The teen numbers
Subtracting multiples of 10
Multi-Step Problem Solving
Number Words to 100
1000 More or Less
Counting forwards and backwards (age 6+)
10 or 100 More or Less
Two written numerals between 1 and 10
Fluent adding and subtracting within 5
Addition and subtraction word problems
Justifying mathematical reasoning (age 8+)
Number bonds to 9
Justifying mathematical reasoning
Guided Multi-Step Problem Solving
Number Words to Twenty
Alignments generated 9 July 2026, unreviewed.
Nearby in the Number strand:
AC9M2N01AC9M2N02AC9M2N03AC9M2N05AC9M2N06
Teaching this? Learning Map for teachers has the sequencing view and copy-paste words to send home.