Knowledge, skills and understanding
Calculations
KS1.Ma2.3 – Pupils should be taught to:
Number operations and the relationships between them
KS1.Ma2.3.a – Understand addition and use related vocabulary; recognise that addition can be done in any order; understand subtraction as both 'take away' and 'difference' and use the related vocabulary; recognise that subtraction is the inverse of addition; give the subtraction corresponding to an addition and vice versa; use the symbol '=' to represent equality; solve simple missing number problems [for example, 6 = 2 + ? ]
Samples: Add on to 5. Add on to 10. Addition to 20. Make 10. Counting forwards and backwards by 10.
Mental methods
KS1.Ma2.3.c – Develop rapid recall of number facts: know addition and subtraction facts to 10 and use these to derive facts with totals to 20, know multiplication facts for the x2 and x10 multiplication tables and derive corresponding division facts, know doubles of numbers to 10 and halves of even numbers to 20
Samples: Add on to 5. Add on to 10. Addition to 20. Make 10. Counting forwards and backwards by 10.
KS1.Ma2.3.e – Carry out simple calculations of the form 40 + 30 = ?, 40 + ? = 100, 56 - ? = 10; record calculations in a number sentence, using the symbols +, -, x, ÷ and = correctly [for example, 7 + 2 = 9] .
Samples: Add on to 10. Addition to 20. Make 10. Add three numbers - each under 6. Counting forwards and backwards by 10.
Knowledge, skills and understanding
Calculations
KS2.Ma2.3 – Pupils should be taught to:
Number operations and the relationships between them
KS2.Ma2.3.a – Develop further their understanding of the four number operations and the relationships between them including inverses; use the related vocabulary; choose suitable number operations to solve a given problem, and recognise similar problems to which they apply
Samples: Single digit addition with a missing number. Add on numbers under 10. Two digit addition: Activity 1.
Mental methods
KS2.Ma2.3.d – Recall all addition and subtraction facts for each number to 20
Samples: Addition to 20. Subtract single digit numbers. Single digit addition with a missing number.
Number and place value
ACMNA029 – Explore the connection between addition and subtraction
Samples: Make 10. Addition to 20. Add three numbers - each under 6. Single digit addition with a missing number.
Number and place value
ACMNA055 – Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation
Samples: Addition to 20. Add three numbers - each under 6. Single digit addition with a missing number.
4.NA.1 – Apply basic addition and subtraction facts, simple multiplication facts, and knowledge of place value and symmetry to:
4.NA.1.a – Combine or partition whole numbers
Samples: Counting to 100 on a number line: Activity 1. Make 10. Addition to 20. Add three numbers - each under 6.
Mathematics
1.OA.8 – Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ – 3, 6 + 6 = _.
Samples: Make 10. Single digit addition with a missing number. Subtract single digits with a missing number.
Mathematics
2.OA.2 – Fluently add and subtract within 20 using mental strategies. (See standard 1.OA.6 for a list of mental strategies.) By end of Grade 2, know from memory all sums of two one-digit numbers.
Samples: Investigating number patterns. Make 10. Addition to 20. Add three numbers - each under 6.