Using Subtraction to Measure the Difference in Height

This video tutorial teaches how to find the difference in measurement between two objects by using subtraction. It covers the use of standard and metric units, explains how to measure using a ruler even if it doesn't start at zero, and demonstrates comparing the heights of two dogs. The tutorial emphasizes counting spaces on a ruler and using subtraction to calculate differences, illustrating the process with a practical example involving dog heights.

What is the standard unit of length in the metric system?

• Inches

• Feet

• Yards

• Centimeters

How many inches are there in one foot?

• 12

• 10

• 14

• 16

When using a ruler, what should you do if it doesn't start at 0?

• Ignore the first few numbers

• Start measuring from the first visible number

• Count the spaces from the beginning

• Start from the middle of the ruler

How many spaces are there between 30 and 47 centimeters on the ruler?

• 15

• 16

• 18

• 17

What is the height of Josie's dog?

• 47 cm

• 17 cm

• 32 cm

• 62 cm

How much taller is Josie's dog compared to Emily's dog?

• 15 cm

• 17 cm

• 12 cm

• 10 cm

What is the purpose of counting spaces on a ruler?

• To calculate the area of a surface

• To find the total length of the ruler

• To measure the distance between two points

• To determine the width of an object