SS2: Mathematics - 1st Term Examination

1. Question

A salesgirl gave a change of N1.15k to a customer instead of N1.25k. Calculate the percentage error.

10%
8.7%
8.0%
2.4%

2. Question

The student measured the length of a room and obtained the measurement of 3.99m. If the percentage error of this measurement was 5% and his own measurement was smaller than the length, what is the length of the room?

3.78
3.80
4.18m
4.20m

3. Question

Instead of recording the number of 1.23cm of the radius of a tube, a student recorded 1.32cm. Find the percentage error, correct to one decimal place.

6.8%
7.3%
9.6%
14.4%

4. Question

While doing his physics practical, Idowu recorded a reading as 1.12cm instead of 1.21cm. Calculate his percentage error.

1.17%
6.38%
7.44%
8.05%

5. Question

The sides of a square is increased from 20cm to 21cm. Calculate the percentage increase in its area.

2.5%
9.3%
10.0%
10.25%

6. Question

Mrs. Kofi sold an article for G7.50 instead of G12.75. Calculate her percentage error, correct to one decimal place.

41.2%
18.3%
5.3%
1.75%

7. Question

Express correct to three significant figures, 0.003597

0.359
0.004
0.00360
0.00359

8. Question

Evaluate correct to two decimal places 75.078 – 34.624 + 9.83.

30.60
50.29
50.28
30.62

9. Question

Find the value of a if log₁₀a + log₁₀a² = 0.9030

4.0
2.0
1.9
0.0

10. Question

If log 5.957 = 0.7550, Find \( \scriptsize\log \sqrt[3]{0.0005957}\)

\( \scriptsize \bar{4}.198 \)
\( \scriptsize \bar{2}.9183 \)
\( \scriptsize \bar{1}.5917 \)
\( \scriptsize \bar{1}.075 \)

11. Question

What is the number whose logarithm to base ten is 3.4771?

3.0
3000
0.03
0.003

12. Question

An arc of a circle subtends an angle of 30° on the circumference of the circle of radius 21cm. Find the length of the arc.

11cm
22cm
44cm
66cm

13. Question

What is log₁₀(6.95 × 10^-3)?

\(\scriptsize \bar{0}.8420 \)
\(\scriptsize \bar{3}.8420 \)
\(\scriptsize 3.8420 \)
\(\scriptsize 3.9777 \)