This document contains 10 mathematics questions and their answers related to topics like BODMAS, decimals, fractions, indices, equations, factorizing, and simplifying expressions. The questions cover evaluating expressions, writing numbers in standard form, solving simultaneous equations, factorizing numbers, solving equations involving indices, identifying types of numbers, and finding the value of variables in expressions. The document promotes joining a WhatsApp group for more math, science, and English revision questions.
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Mathematics
1. Biomath School- 0961904487
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MATHEMATICS-Bodmas, Decimals, Fractions, Indices & Equations,
10 Quick revision questions and answers
1. (a)Evaluate 12 - 6 3 4
Answer: use BODMAS
6 , -2+4=2
12+2=14
(b)Evaluate 0.3 1.5
Answer: first convert into fractions
(c) Evaluate
Answer: since the denominators need a common denominator
of . Just cross multiply and subtract.
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(d) Evaluate
Answer: you should maintain , but should change to .
2. Write the number 0.034 in standard form.
Answer: First convert 0.034 in standard form and then use indices.
0.034=
3. Solve the simultaneous equations below.
Answer: from the two equations, it is clear that we should use
substitution method by making as the subject of formula.
Then multiply 4 by
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Collect like terms
4. Express 500 as the product of its prime factors.
Answer: see how I am doing it.
500=5
500=5
500=5 , there are now three fives and two twos.
500=
5. Given that M= N=
Find the value p and q when
(i) M (ii) M (iii)
Answer: (i) , p=5, q=4
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(ii) , p=-3, q=0
(iii) , p=8, q=4
6. Factorise to find the value of y,
Answer :( 3y+2) (y-3) =0, y=
7. Simplify
Answer: first work on things inside the brackets using rules of indices.
The final answer is .
8. Solve the equation
Answer: multiply 5 by
Collect like terms
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9.
From the numbers listed above, write down
(a) a square number- Answer:81
(b) a cube number- Answer: 8
(c) an irrational number Answer:
10.Find the value of n, if
Answer:
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10 Quick Revision Questions & Answers in Mathematics, Biology, Sciences
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