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What are negative numbers? | Year 5 Mathematics PDF Download

Understanding Negative Numbers

  • Numbers don't simply end at zero; there exists a realm of negative numbers.
  • Negative numbers are values less than zero, such as -1, -2, -3, -4, and so on.
  • On the other hand, positive numbers are greater than zero, like 1, 2, 3, 4, 5, and beyond.
  • Zero (0) itself is distinct from both positive and negative numbers.
  • Negative numbers are relevant in various contexts, such as temperature. 
    • For instance, temperatures can drop below zero, like the current -15°C. A thermometer clearly shows that -15°C is lower than -5°C because it's further down the scale, both being negative. Similarly, in buildings, negative numbers indicate levels below ground, like a floor 10 levels underground.

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FAQs on What are negative numbers? - Year 5 Mathematics

1. What are negative numbers?
Ans. Negative numbers are numbers less than zero. They are often used to represent values that are below a reference point or in the opposite direction of positive numbers on a number line.
2. How are negative numbers used in real-life situations?
Ans. Negative numbers are used in various real-life situations such as calculating debts, measuring temperatures below zero, determining elevations below sea level, and representing losses in business.
3. Can negative numbers be added or subtracted like positive numbers?
Ans. Yes, negative numbers can be added or subtracted just like positive numbers. When adding or subtracting negative numbers, the rules are similar to those for positive numbers, with signs determining the operation.
4. How are negative numbers represented on a number line?
Ans. Negative numbers are represented to the left of zero on a number line. The further left a number is on the number line, the smaller the value. Positive numbers are to the right of zero.
5. Why is it important to understand negative numbers in mathematics?
Ans. Understanding negative numbers is crucial in mathematics as they expand the number system beyond positive values, allowing for a more comprehensive representation of quantities and relationships in various mathematical operations and real-world scenarios.
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