- Informal and mental strategies for adding and subtracting two 3-digit numbers

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New

Year 3

# Informal and mental strategies for adding and subtracting two 3-digit numbers

## Lessons (10)

- I can add two 3-digit numbers using partitioning.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can adjust a number to make an addition easier.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can add 2 and 3-digit numbers by redistributing.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can choose the most efficient strategy to add two 3-digit numbers.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can subtract 2 or 3-digit numbers using partitioning and bridging a multiple of 101 Slide deck1 Worksheet2 Quizzes1 Video
- I can subtract a pair of 2-digit numbers by finding the difference.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can subtract 3-digit multiples of 10 by finding the difference between them.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can choose the most efficient strategy to subtract from a 3-digit number.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can use addition and subtraction to solve problems involving bar charts, pictograms and tables.1 Slide deck1 Worksheet2 Quizzes1 Video
- I can use addition and subtraction strategies to solve problems in different contexts.1 Slide deck1 Worksheet2 Quizzes1 Video