Express the product of 0.0014 and 0.011 in standard form
1.54 x 10-2
1.54 x 10-3
1.54 x 10-4
1.54 x 10-5
Correct answer is D
\(0.0014 = 1.4 \times 10^{-3}\)
\(0.011 = 1.1 \times 10^{-2}\)
\(\therefore 0.0014 \times 0.011 = 1.4 \times 10^{-3} \times 1.1 \times 10^{-2}\)
= \(1.54 \times 10^{-5}\)
N28,800
N29,040
N31,200
N31,944
Correct answer is B
Present salary = N24,000.
Increment after first year = \(\frac{10}{100} \times N24,000 = N2,400\)
Salary at the beginning of second year = N(24,000 + 2,400)
= N26,400.
Increment after second year = \(\frac{10}{100} \times N26,400 = N2,640\)
Salary at the beginning of third year = N(26,400 + 2,640)
= N29,040.
\(\therefore\) His salary at the beginning of the third year = N29,040.
12.00%
11.00%
10.71%
0.12%
Correct answer is A
Error = (16.8cm - 15cm = 1.8cm\)
\(\text{% error} = \frac{1.8}{15} \times 100% = \frac{180}{15}\)
= \(12.00%\)
Convert 3.1415926 to 5 decimal places
3.14160
3.14159
0.31415
3.14200
Correct answer is B
3.1415926 \(\approxeq\) 3.14159 (to 5 d.p)
13135
21315
43025
11035
Correct answer is A
\(3310_{5} - 1442_{5} = 1313_{5}\)
You can either do a direct subtraction (which is easier), or convert both numbers in base 10, subtract and convert back to base 5 (if you're not sure).