New
New
- Year 3
Informal and mental strategies for adding and subtracting two 3-digit numbers
Lessons (10)
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I can add two 3-digit numbers using partitioning.
I can adjust a number to make an addition easier.
I can add 2 and 3-digit numbers by redistributing.
I can choose the most efficient strategy to add two 3-digit numbers.
I can subtract 2 or 3-digit numbers using partitioning and bridging a multiple of 10
I can subtract a pair of 2-digit numbers by finding the difference.
I can subtract 3-digit multiples of 10 by finding the difference between them.
I can choose the most efficient strategy to subtract from a 3-digit number.
I can use addition and subtraction to solve problems involving bar charts, pictograms and tables.
I can use addition and subtraction strategies to solve problems in different contexts.
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