upper and lower bounds

Question 1

rounding

Answer 1

rounding the no. up or down on its depending place in the numerical scale

Question 2

upper and lower bounds brief

Answer 2

this is roughly the reverse of rounding

Question 3

a no. has been rounded to 1.23 (2d.p.s) what is the lower bound

Answer 3

you find the lower bound by following the same rules as rounding meaning that the ans. is 1.225

Question 4

a no. has been rounded to 1.23 (2d.p.s) what is the upper bound

Answer 4

the ans would be 1.234