Question

1. Fill in the blanks: When you use distributivity, you split a product as a sum or difference of ____ products.
2. Fill in the blanks: Whole numbers are closed under _____ and _____ .
3. WriteWrite the additive inverse of (-9/13)
4. Verify– (– x) is the same as x for x = -31/21
5. FindFind five rational numbers between 2/3 and 4/5
6. Find: 4/10*-6/14-2/28-6/14*6/10.
7. State True/False: A number which can be written in the form p/q , where p and q are integers and q is not equal to 0 is called a rational number.
A) true B) false
8. Fill in the blanks: Zero has ________ reciprocal.
9. FillFill in the blanks: Every rational number has its additive inverse, every _______ rational number has its multiplicative inverse.
10. a/b is a rational number, b is usually positive, whereas a may be positive, negative or zero.
A) true B) false
11. State Yes/No: Is division commutative for rational numbers ?
A) YES B) NO
12. State True/False: Subtraction is not commutative for rational numbers.
A) true B) false
13.Fill in the blanks: Two rational numbers a/b and c/d are equal , if and only if :_________
14. Fill in the blanks: Integers are not closed under ________
15. Fill in the blanks: Addition is associative for rational numbers. That is, for any _____ rational numbers a, b and c, a + (b + c) = (a + b) + c.​

Answer 1

Answer:

2

1, 10

10

90

78

56

34

23

46

28

27

9

2

4

4