Answer:
70 cm
Step-by-step explanation:
Given:
The first piece of lumber Jolie finds is labeled as 500 millimeters long, the second piece is labeled as 1 meter long, and the third piece is labeled as 20 centimeters long
.
To find: How many centimeters shorter is the first piece of lumber that Jolie finds than the length of the second and third pieces of lumber combined
Solution:
Length of first piece = 500 mm = 50 cm (As 1 cm = 10 mm)
Length of second piece = 1 m =100 cm (As 1 m =100 cm )
Length of third piece = 20 cm
Sum of length of second and third piece = 100 + 20 =120 cm
So,
Sum of length of second and third piece - Length of first piece = 120 - 50 = 70 cm
Therefore,
the first piece of lumber is shorter than the length of the second and third pieces of lumber combined by 70 cm.
