Year 2 Block A – Counting, partitioning and calculating
The focuses of mathematics learning within this block are:
 Place value in 2 and 3 digit numbers
 Partition into multiples of 10 and ones
 Comparing, ordering, reading and writing 2digit and 3digit numbers
 Use the < and > symbols
 Patterns and sequences
 Counting on and back in steps of different sizes
 Odd and even numbers
 Mental methods
 Addition/subtraction of 1 and 2 digit numbers
 Partitioning and counting on/back
 Solving problems and puzzles involving understanding of numbers and operations; explaining their methods and justifying decisions
The objectives for the block are listed in the table – the right hand column indicates how the objectives might be addressed in the units
Objectives 
Unit 1 
Unit 2 
Unit 3 
Present solutions to puzzles and problems in an organised way; explain decisions, methods and results in pictorial, spoken or written form, using mathematical language and number sentences




Read and write twodigit and threedigit numbers in figures and words; describe and extend number sequences and recognise odd and even numbers




Count up to 100 objects by grouping them and counting in tens, fives or twos; explain what each digit in a twodigit number represents, including numbers where 0 is a place holder; partition twodigit numbers in different ways, including into multiples of 10 and 1




Order twodigit numbers and position them on a number line; use the greater than > and less than < signs




Estimate a number of objects; round twodigit numbers to the nearest 10




Add or subtract mentally a onedigit number or a multiple of 10 to or from any twodigit number; use practical and informal written methods to add and subtract twodigit numbers




Understand that subtraction is the inverse of addition and vice versa; use this to derive and record related addition and subtraction number sentences




Use the symbols +, −, × , ÷ and = to record and interpret number sentences involving all four operations; calculate the value of an unknown in a number sentence (e.g. ☐ ÷ 2 = 6, 30 − ☐ = 24)



