S2A Chapter 1 Extra Exercise

Round off 183.577 to 3 significant figures. [blank_start]184[blank_end]

Round off 29.05 to 3 significant figures. [blank_start]29.1[blank_end]

Round off 17 to 3 significant figures. [blank_start]17.0[blank_end]

Round off 299700 to 3 significant figures. [blank_start]300000[blank_end]

How many significant figures are there if the following numbers are rounded off to the nearest ten? 197 [blank_start]2[blank_end] 277453.69 [blank_start]5[blank_end] 10.7 [blank_start]1[blank_end] 995 [blank_start]3[blank_end] 10000 [blank_start]4[blank_end]

Estimate the value of the following expressions by rounding off each number to 2 significant figures. 137 + 255 x 299.7 [blank_start]78140[blank_end] 25.7 x 0.0197 + 17.49 [blank_start]17.52[blank_end] 291 + 374 - 299 [blank_start]360[blank_end]

Find the absolute error when the following data are rounded off to 3 significant figures. 13995.7 [blank_start]4.3[blank_end] 2997.33 cm [blank_start]2.67[blank_end] cm 0.07745 km [blank_start]0.00045[blank_end] km 1.777777 L [blank_start]0.002223[blank_end] L

Express the actual value of a data in terms of "absolute error" and "relative error". actual value = [blank_start]absolute error[blank_end]/[blank_start]relative error[blank_end]