Question

A carpenter has two pieces of oak trim One pioce of trim is 3 3/4 A long and other is 2 11/12 long Estimate how many of oak trim she has in all Then find the exact answer

Answer 1

The mark ≈ means approximately equal.

3 3/4 ≈ 4

2 11/12 ≈ 3

Estaminate 4 + 3 = 7


The exact answer :

3 3/4 = 3 3∙3/ 3∙ 4 = 3 9/12


2 11/12 + 3 3/4 = 2 11/12 + 3 9/12 = 2 + 3 + 11/12 + 9/12 = 5 + 20/12 =


5 + ( 12 + 8 )/12= 5 + 12/12 + 8/12= 5 + 1 + 8/12 = 6 + 4∙2/4∙3 = 6 2/3