Use approximations to 1 significant figure to estimate the value of 0.101 x (51.2)^2 / (3.96)^1/2

Firstly simplify the equation down so all the elements are approximated to 1 significant figure, this gives us:0.1 x 502 / 41/2Then work out the values of the 502 and 41/2502= 250041/2=2Put these back into the equation and work out the answer:0.1x2500/2=250/2=125

LB

Related Maths GCSE answers

All answers ▸

Find the values of x: x^2 + 14x + 22 = 4x -2


How do you rearrange x = (2y+1)/(3y+4) to get y in terms of x?


A rectangle has an area of 20 cm^2.  Its length and width are enlarged by scale factor 3.  Find the area of the enlarged rectangle.


How would you work out how much money each Fred and Julie get if they share £60 in a 5:7 ratio?