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**(KS1 > Mathematics (National Curriculum) > Number > Calculations) :-**1. 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 + ? ] View games for this curriculum aim**(KS1 > Mathematics (National Curriculum) > Number > Calculations) :-**2. understand multiplication as repeated addition; understand that halving is the inverse of doubling and find one half and one quarter of shapes and small numbers of objects; begin to understand division as grouping (repeated subtraction); use vocabulary associated with multiplication and division Mental methods View games for this curriculum aim**(KS1 > Mathematics (National Curriculum) > Number > Calculations) :-**5. 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] . View games for this curriculum aim**(KS1 > Mathematics (National Curriculum) > Number > Solving Numerical Problems) :-**1. choose sensible calculation methods to solve whole-number problems (including problems involving money or measures), drawing on their understanding of the operations View games for this curriculum aim**(KS2 > Mathematics (National Curriculum) > Breadth of study > Misc) :-**activities that extend their understanding of the number system to include integers, fractions and decimals View games for this curriculum aim**(KS2 > Mathematics (National Curriculum) > Number and Algebra > Mental Methods) :-**double and halve any two-digit number View games for this curriculum aim**(KS2 > Mathematics (National Curriculum) > Number and Algebra > Mental Methods) :-**multiply and divide, at first in the range 1 to 100 [for example, 27 x 3, 65 ÷ 5], then for particular cases of larger numbers by using factors, distribution or other methods View games for this curriculum aim