Significant figures - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 1980

Write down the number 0.0052048 correct to three significant figures

A. 0.005
B. 0.0052
C. 0.00520
D. 5.2048
E. 5204

Question 7:

• JAMB 1984

If the price of oranges was raised by \(\frac{1}{2}\)k per orange. The number of oranges a customer can buy for N2.40 will be less by 16. What is the present price of an orange?

A. 2\(\frac{1}{2}\)
B. \(\frac{2}{15}\)
C. 5\(\frac{1}{3}\)
D. 20

Question 8:

• JAMB 1990

Correct 241.34(3 x 10^-3)² to 4 significant figures

A. 0.0014
B. 0.001448
C. 0.0022
D. 0.002172

Question 9:

• JAMB 1991

express 62 \(\div\) 3 as a decimal correct to 3 significant figures

A. 20.6
B. 20.667
C. 20.67
D. 20.7

Question 10:

• JAMB 1993

Evaluate \(\frac{3524}{0.05}\) correct to 3 significant figures

A. 705
B. 70,000
C. 70, 480
D. 70, 500