Rational and Irrational Numbers
1. What are rational numbers?
2. What are irrational numbers?
3. What are terminating decimals?
4. What are non-terminating decimals?
5. What are recurring decimals?
6. What are non-recurring decimals?
7. What is the notation for Real numbers?
8. What is the notation for Integers?
9. What is the notation for Whole numbers?
10. What is the notation for Natural Number?
11. What is the notation for Whole numbers?
12. Convert 0. into a fraction. (41/99)
13. Convert 3. into a fraction. (39/11)
14. Represent 1123000 into scientific notation.
15. Transform 0.00000125 into scientific notation
16. Transform 1.25 x 10-5 into expanded form.
17. Write 3 x 108m/s in expanded form.
18. The average distance between Earth and Mercury is 57,910,000 km, Represent this distance in scientific notation.
19. The weight of hydrogen atom is 0.000000000000000000000000001673kg, Represent it in scientific notation.
20. Which of the given numbers are rational numbers: , , , .
21. Which of the following numbers are irrational numbers: , , , .
22. Simplify: 6.7 x 10-4 – 3.3 x 10-5
23. Simplify:
Answers:
1. A numbers which is in the form of , where a and b are integers and b 0 is rational numbers.
2. The numbers which cannot be expressed in the form of is irrational numbers.
3. Decimal that has end digit is terminating decimals.
4. Decimal that has never ending digit is non-terminating decimals.
5. Decimal that keep on repeating the same value after the decimal point is recurring decimals.
6. Decimals that do not repeat their values after the decimal point is non-recurring decimals.
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