Class 1 (CBSE) • MathematicsChapter 6: Vegetable Farm⭐ Topic 1
Numbers up to 99 - Counting in Groups
Learning to count larger quantities by grouping in tens.
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Instead of counting one by one all the way to 99, we can count in groups of 10 - like 10, 20, 30... up to 90, and then add any extra ones, like 90 plus 5 more makes 95.
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- Counting in groups of 10 makes counting large numbers easier.
- We count 10, 20, 30... up to 90 in groups of ten.
- Extra ones are added after counting full groups of ten.
- 4 groups of 10 plus 3 extra makes 43.
- Grouping in tens helps count faster and more accurately.
- This method is the foundation of place value.
- Numbers up to 99 can be counted using this method.
- Grouping helps when there are too many objects to count one by one.