Question

A=340

rounded to the nearest 10
b=49.8
rounded to 1 DP
Find the minimum of
a x b

Answer 1

16666.25

Explanation:

For rounded values, the minimum value they could have been rounded from is the given value less half its least-significant digit.

That means the minimums are ...

a: 340 ⇒ 340 -5 = 335

b: 49.8 ⇒ 49.8 -0.05 = 49.75

Then the minimum product would be ...

(335) × (49.75) = 16666.25