1.
The round off value of 78.25m to the nearest 10m is

2.
By evaluating (83 x 2.06)⁄5.48, the answer correct to three significant figures is

3.
The estimated value of the square root of 650 is

4.
The correct value of 0.006472867 up to three significant figures is

5.
The round off value of 10256⁄32548 up to three decimal places is

6.
By evaluating (2.8³) x (1.2²)⁄(0.56+3.78), the closest estimate answer is

7.
The number of significant figures in 9.00823 are

8.
The round off value of 80⁄70 up to four decimal places is

9.
The number of significant figures in value 0.0891 are

10.
The estimated value of 52586 ⁄ 87856 is

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