Q.1. Find the value of (40
+ 4-1
) × 22
Q.2. Solve
a) 3-4
b)(½)-2
Q.3. Simplify the following expression and express the result in positive power notation: (−4)5
÷ (−4)8
Q.4. Evaluate a2
× a3
× a-5
Q.5. Express 4-3
as a power with base 2.
Q.6. Evaluate (√4)-3
Q.7. Find the value of x for which 2x
÷ 2-4
= 45
Q.8. Calculate the missing value of “x” in the following expression: (11/9)3
× (9/11)6
= (11/9)2x-1
Q.9. 5 books and 5 paper sheets are placed in a stack. Find the total thickness of the stack if each book
has a thickness of 20 mm and each sheet has a thickness of 0.016 mm.
Q.10. If a new-born bear weighs 4kg, calculate how many kilograms a five-year-old bear weigh if its
weight increases by the power of 2 in 5 years ?
Q.11: Simplify [25 x t-4
] ÷ [5-3
x 10 x t-8
]
Q.12: Express 0.00000000837 in standard form.
Q.13: Write 3.61492 x 106
in usual form.
Answers
Answered by
6
1) 40 +3 ×22
=946
2) 3-4
= -1
b) -1.5
3)-20÷ -32
= 0.625 or 625/1000
4) a×a ×a×a×a ×a-2-3
5)
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