Which does not show a reasonable estimate of 360 * 439? a 100,000 b 140,000 c 160,000 d 180,000

A. 100,000

Step-by-step explanation:

Given expression,

Since, when we round only 439,

∵ 439 ≈ 400 ( nearest hundred )

Hence, option 'B' shows a reasonable estimation,

When we round both 439 and 360 to nearest hundred,

That is, 439 ≈ 400, 360 ≈ 400

Hence, option 'C' shows a reasonable estimation,

When we round 360 to nearest hundred and 440 to nearest ten,

That is, 360 ≈ 400, 439 ≈ 440

Hence, option 'D' shows a reasonable estimation.

yes

step-by-step explanation:

d i think

step-by-step explanation: