Rounding Off Estimations — Revision Notes
ICSE · Class 5 · Mathematics
Rounding Off Estimations revision notes for ICSE Class 5 Mathematics: 2 topics in quick points. Part of the ICSE Class 5 Mathematics syllabus.
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Key Topics to Revise
Rounding Off Numbers
- Rounding off means replacing a number with a nearby number that is easier to work with.
- We round off to the nearest 10, 100, or 1000 depending on the situation.
- Look at the digit to the right of the place you are rounding to.
Estimation in Number Operations
- We can estimate sums, differences, products, and quotients by first rounding the numbers.
- For addition and subtraction, round all numbers to the same place value.
- For multiplication and division, round each number to its greatest place value.
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