The estimated value of the square root of 650 is

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

A. 75m

B. 80m

C. 79m

D. 78m

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

A. 5.12

B. 31.2

C. 312

D. 3.12

The correct value of 0.006472867 up to three significant figures is

A. 0.00647

B. 0.006

C. 0.00867

D. 0.647

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

A. 0.315

B. 0.316

C. 0.318

D. 0.32

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

A. 7

B. 70

C. 700

D. 0.7