Question Details

Estimate the value that should replace the question mark (?) in the mathematical statement below:

2196.9033÷1520.960×3.102+?=143.991

Options

A

169

B

134

C

143

D

124

E

101

Show Answer

Correct Answer :

Option C

143

Solution :

The correct option is 143.

Given the mathematical statement:

2196.9033÷1520.960×3.102+?=143.991

To estimate the value that should replace the question mark (?), we approximate each term in the expression to its nearest integer or simplified decimal value:

- 2196.903321973=13 (since 133 = 2197)
- 1520.9601521=39 (since 392 = 1521)
- 3.1023.1
- 143.991144

Substitute these approximate values into the equation:

13÷39×3.1+?=144

Simplify step-by-step:

1339×3.1+?=144

13×3.1+?=144

1.033+?=144

?=144-1.033

?=142.967143

Thus, the estimated value that should replace the question mark (?) is 143.

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