Option A: 6 ∙ (30 - 1)
Solution:
Given expression is 6 · 29.
Friendlier term means a number can be expressed using other numbers which are closest to the number.
Option A: 6 ∙ (30 - 1)
30 is closest to 29, so which is the friendlier term to 29.
6 · 29 = 6 ∙ (30 - 1)
Option B: 6 ∙ (16 + 13)
16 and 13 are not closest to 29, which are not the friendlier terms.
Option C: 6 ∙ (19 + 10)
19 and 10 are not closest to 29, which are not the friendlier terms.
Option D: 6 ∙ (21 + 8)
21 and 8 are not closest to 29, which are not the friendlier terms.
Hence Option A: 6 ∙ (30 - 1) is the correct answer.
