MATHEMATICS

JAMB 2009 - Question 4

Mathematics 2009 JAMB Past Questions - Question 4: Evaluate 81.81 +99.44 /20.09 +36.16 correct to 3 significant figure

Evaluate 81.81 +99.44 /20.09 +36.16 correct to 3 significant figure
A:
B:
C:
D:
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Correct Answer

B

Explanation

81.81+99.44/20.09+36.16 181.25/56.25 =3.22To evaluate the expression 81.81 + 99.44 / 20.09 + 36.16 and round the result to 3 significant figures, we can follow the order of operations (PEMDAS/BODMAS).First, we perform the division:99.44 / 20.09 = 4.950773558368495Next, we add the remaining numbers:81.81 + 4.950773558368495 + 36.16 = 122.9207735583685Rounding the result to 3 significant figures, we get:122.9207735583685 ≈ 123Therefore, the evaluated expression, rounded to 3 significant figures, is 123.