a - (-b) =_____________ if the value of a = 21, b = 18.
21
3
39
42
(-57) × (-29) + 50 = ____________.
1703
1659
1197
None of these
7 x 1 = 1 x 7 = 7. State the property used here.
Commutative
Closure
Multiplicative identity
Associative
0 x 2341 =
0
2341
2300
1
7, 3, -1, -5, -9, -13, ----------.
-16
7
-17
-19
Additive inverse of -7 is
- 7
+ 7
(-3) ×_________ = 27
-9
-81
81
9
(-1) × (-1) × (-1) =
+ 1
- 1
-3
[(14 + (-11)] + (-5) = 14 + [(-11) + --------]
5
-5
Subtract -16 from -32
16
- 16
48
- 48
