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Estimate it!
Measure it!
Which unit?
Unit conversions
Word Problems
100

About how many centimeters wide is your fingernail?

1 cm

100
How many inches is your book box?
_____ in.
100
With which unit would you measure a crayon? a. centimeters b. meters
a. centimeters
100
How many inches are in one foot?
12 inches
100

Randi measured a marker and said it was 5 inches.  Erin measured the same marker and said it was 12 centimeters.  Mrs. Smith said they were both correct.  How could this be possible?

Centimeters are smaller units, so it will take more of them to measure the same object.

200
Estimate how tall the door is in yards.
2 yards
200
How many centimeters long is a paperclip?
____ cm
200
With which unit would you measure a soccer field? a. inches or centimeters b. feet c. yards or meters
c. yards or meters
200
How many feet are in one yard?
3 feet.
200

Look at the graph. How many students foot measured 6 inches or longer? (Use graph 1)

 4 students

300
Which is the best estimate for height of the whiteboard? a. 4 feet b. 10 feet c. 1 foot
a. 4 feet
300

If you were measuring the distance around a basketball, what would be the best tool to use?

Tape Measure

300
With which unit would you measure the height of a person?
feet
300
How many centimeters are in one meter?
100 centimeters.
300

How many students measured their feet altogether? (Use graph 1)

10 students

400

Which is the best estimate for height of Mrs. Thompson? a. 5 feet b. 5 meters c. 5 centimeters

a. 5 feet

400
Would you use a yardstick or a ruler to measure the distance from your desk to the bathroom?
yardstick
400
With which unit would you measure the length of our library? a. feet b. centimeters c. yards or meters
c. yards or meters.
400
If 12 inches are in 1 foot, how many inches are in 2 feet?
24 inches
400

How many objects that were measured were less than 5 inches? (Use graph 2)

6 students

500
Which is the best estimate for the height of a stopsign? a. 10 feet b. 10 inches c. 10 meters
a. 10 feet
500
How many inches long is your desk?
______ in.
500
With which unit would you measure the length of a person's ear? a. centimeters b. feet c. yards Estimate the length of a person's ear.
centimeters. Estimation between 4 and 9 centimeters.
500
If 3 feet are in 1 yard, how many feet are in 3 yards?
9 feet.
500

How many objects that were measured were between 3 and 7 inches? (Use graph 2)

7 objects