Number — Grade 2

• 2, 5 and 10 times tables

  Litnumia skill: 2, 5 and 10 times tables

  Equal groups and arrays with tools; students choose among flexible strategies (halving/doubling, partial products) before standard algorithms in later grades.

• Arrays and repeated addition

  Litnumia skill: Arrays and repeated addition

  Equal groups and arrays with tools; students choose among flexible strategies (halving/doubling, partial products) before standard algorithms in later grades.

• Compare and order numbers to 100

  Litnumia skill: Compare and order numbers to 100

  Represent numbers with a variety of tools (ten-frames, base-ten blocks, number lines) and contexts; students explain their reasoning and compose/decompose numbers flexibly.

• Division as sharing and grouping

  Litnumia skill: Division as sharing and grouping

  Equal groups and arrays with tools; students choose among flexible strategies (halving/doubling, partial products) before standard algorithms in later grades.

• Doubles and halves to 20

  Litnumia skill: Doubles and halves to 20

  Student-invented and mental strategies first (decomposing, compensating, open number lines); standard algorithms are consolidated later than in other systems.

• Fact families and inverse operations

  Litnumia skill: Fact families and inverse operations

  Student-invented and mental strategies first (decomposing, compensating, open number lines); standard algorithms are consolidated later than in other systems.

• Fractions of a set

  Litnumia skill: Fractions of a set

  Heavy use of visual models (fraction strips, number lines, area models); Ontario says 'fourths'; equivalence and operations reasoned through models before symbols.

• Mental addition and subtraction of two-digit numbers

  Litnumia skill: Mental addition and subtraction of two-digit numbers

  Student-invented and mental strategies first (decomposing, compensating, open number lines); standard algorithms are consolidated later than in other systems.

• Place value: tens and ones

  Litnumia skill: Place value: tens and ones

  Represent numbers with a variety of tools (ten-frames, base-ten blocks, number lines) and contexts; students explain their reasoning and compose/decompose numbers flexibly.

• Position numbers on a number line to 100

  Litnumia skill: Position numbers on a number line to 100

  Represent numbers with a variety of tools (ten-frames, base-ten blocks, number lines) and contexts; students explain their reasoning and compose/decompose numbers flexibly.

• Recognise and name unit fractions

  Litnumia skill: Recognise and name unit fractions

  Heavy use of visual models (fraction strips, number lines, area models); Ontario says 'fourths'; equivalence and operations reasoned through models before symbols.