Test: Indices II - Ambitious

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Question 1:   Simplify expression: x 5 × x 7
x -2
x 12
x 2
x 35
Question 2:   Simplify: 3 x -3
x 3 3
3 x
3 x 3
x 3
Question 3:   Find value of 400 a -3 , if a=2
500
-500
50
-50
Question 4:   Find value of 4 a 2 -4a+1 , if a=-3
490
49
4.9
-49
Question 5:   Calculate: ( 3 5 ) 2 - 1 6 ( 1 1 5 ) 2
3 25
- 3 25
6 25
- 6 25
Question 6:   Calculate: 1- 1 5 ( 1 2 ) 2
9 20
9 10
19 20
2 10
Question 7:   Calculate: - 1 3 + ( -2 ) 3
-9
9
3
-3
Question 8:   Calculate: 3 2 ( 3 3 ) 3 3 10
33
3
6
9
Question 9:   Calculate: 10: ( -5 ) -3
-0.8
-0.08
0.8
0.08
Question 10:   Simplify: ( 0.1x ) -2 y×5 x 3
500y
50yx
500yx
500x