2000 - WAEC Mathematics Past Questions and Answers - page 1
1
Express \(\frac{7}{19}\) as a percentage, correct to one decimal place
A
2.7%
B
3.7%
C
27.1%
D
36.8%
2
Express 398753 correct to three significant figures
A
398000
B
398700
C
398800
D
399000
3
simplify \(\frac{10}{\sqrt{32}}\)
A
\(\frac{5}{4}\sqrt{2}\)
B
\(\frac{4}{5}\sqrt{2}\)
C
\(\frac{5}{16}\sqrt{2}\)
D
\(\frac{16}{5}\sqrt{2}\)
4
Find the missing number in the addition of the following numbers, in base seven
\(\begin{matrix}
4 & 3 & 2 & 1\
1 & 2 & 3 & 4\
* & * & * & *\
1&2&3&4&1
\end{matrix}\)
A
3453
B
5556
C
6016
D
13453
5
What fraction must be subtracted from the sum of \(2\frac{1}{6}\) and \(2\frac{7}{12}\) to give \(3\frac{1}{4}\)?
A
\(\frac{1}{3}\)
B
\(\frac{1}{2}\)
C
\(1\frac{1}{6}\)
D
\(1\frac{1}{2}\)
6
Simplify \(\left(\frac{16}{81}\right)^{-\frac{3}{4}}\times \sqrt{\frac{100}{81}}\)
A
\(\frac{80}{243}\)
B
\(\frac{1}{64}\)
C
\(\frac{25}{6}\)
D
\(\frac{15}{4}\)
7
Which of the following numbers is perfect cube?
A
350
B
504
C
950
D
1728
9
The ages of three men are in the ratio 3:4:5. If the difference between the ages of the oldest and youngest is 18 years, find the sum of the ages of the three men
A
45 years
B
72 years
C
108 years
D
216 years
10
Given that \(log_4 x = -3\), find x.
A
\(\frac{1}{81}\)
B
\(\frac{1}{64}\)
C
64
D
81
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