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Unit G – Two Digit Addition
This maths scheme of work for Key Stage One gets the children to model and record how to solve number problems involving addition of pairs of two digit numbers including exchange between place value. The class can explain how to use an expanded method of addition to add the tens and ones in pairs of numbers.
Model and record how to solve number problems involving addition of pairs of two digit numbers including exchange between place value
Lesson One : Sandwich Shopping
Select and add pairs of two digit numbers with no exchange between place value to calculate the cost of buying sandwich fillings
Lesson Two : Supermarket Shopping
Add pairs of two digit numbers with one exchange between place value to calculate the cost of buying pairs of different items from a supermarket
Lesson Three : Number Squares
Identify and record different pairs of two digit numbers that sum to one hundred using a number square to model each calculation
Lesson Four : Addition Number Puzzles
Describe how to solve a range of number puzzles by adding sets of three one digit numbers that can match different sums to one hundred
Lesson Five : Addition Number Reverses
Practise using inverse operations to identify and illustrate how to reverse different addition calculations by using matching subtraction sums
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Number Doubles
Model and record how to double different numbers to twenty using concrete equipment and pictorial diagrams to support calculations
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Zoo Animal Doubles
Practise doubling different numbers of animals that might be seen at a zoo recorded in words and digits to ten using diagrams and number lines to model each product
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Doubles Facts
Identify, match and record the doubles of different numbers to ten using concrete equipment and repeated addition to support each multiplication number calculation
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Tower Doubles
Practise counting and doubling different numbers of cubes that have been used to make a range of towers to five, ten and fifteen