This video tutorial covers the conversion of customary units to metric units, focusing on inches to centimeters, feet to meters, and ounces to grams. It explains the use of bar diagrams and unit rates for conversions, highlighting the importance of approximation symbols when dealing with rounded decimal values. The lesson concludes with a preview of the next topic, which involves converting metric units back to customary units.

What is the main focus of lesson 7.4?

• Converting metric units to customary units

• Converting customary units to metric units

• Learning about the history of measurement systems

• Understanding the metric system only

Which two systems of measurement are most commonly used?

• Customary and Imperial

• Customary and Metric

• Imperial and Metric

• Metric and International

What tool is introduced for converting customary units to metric units?

• Conversion tables

• Mathematical formulas

• Bar diagrams

• Graphical charts

Why is the approximate symbol used in most conversions?

• Because the conversions are exact

• Because the conversions are incorrect

• Because the conversions are estimates

• Because the conversions are rounded

What is the exact conversion of one inch to centimeters?

• 2.5 cm

• 2.45 cm

• 2.54 cm

• 2.55 cm

How many centimeters are there in nine inches?

• 23.86 cm

• 22.86 cm

• 24.86 cm

• 21.86 cm

What is the approximate conversion of one foot to meters?

• 0.315 meters

• 0.3 meters

• 0.305 meters

• 0.35 meters

How many meters are approximately in seven feet?

• 2.135 meters

• 2.135 meters

• 2.135 meters

• 2.235 meters

What is the approximate conversion of one ounce to grams?

• 28.3 grams

• 28.5 grams

• 28.6 grams

• 28.4 grams

How many grams are approximately in three ounces?

• 83.52 grams

• 82.52 grams

• 85.52 grams

• 84.52 grams