Measuring with a Ruler in 2nd Grade

The video tutorial explains the differences between the US customary system and the metric system. It covers how to read a ruler using inches and fractions in the US system and demonstrates the simplicity of the metric system, which is based on units of ten. Practical examples are provided to illustrate how to measure using both systems, highlighting the ease of the metric system compared to the more complex fractional measurements in the US customary system.

When did the United States adopt the metric system?

• 1945

• 1900

• 1866

• 2000

How many units are there in the US customary system on a ruler?

• 12

• 16

• 30

• 10

What fraction of an inch does one quarter represent?

• 1/8

• 1/4

• 1/16

• 1/2

How many sixteenths are there in one inch?

• 32

• 16

• 12

• 8

What does a measurement of 3/4 of an inch indicate?

• Three quarters to an inch

• One quarter to an inch

• Halfway to an inch

• Full inch

What is the measurement of a line that reaches the last mark before a full inch?

• 3/4 of an inch

• 1 inch

• 1/2 of an inch

• 15/16 of an inch

How many millimeters make one centimeter?

• 5

• 20

• 10

• 15

What is the length of a line from 3 to halfway between 4 and 5 in centimeters?

• 2.5 cm

• 2 cm

• 1.5 cm

• 1 cm

If a line starts at 10 and ends at 12.7 on a metric ruler, what is its length?

• 2.7 cm

• 3 cm

• 2 cm

• 1.7 cm

Which system is considered easier to use based on the division of units?

• US Customary System

• Both are equally easy

• Metric System

• Neither, both are complex