Estimating Lengths and Converting Units

What is a possible benchmark for centimeters?
1. shoulder to outstreched fingertips
2. width of your finger
3. width of two fingers
4. fingertip to your knuckle
Estimate the length of your paper
1. 35 cm
2. 45 cm
3. 20 cm
4. 28 cm
300 ft. equal ______yds.
1. 50
2. 150
3. 100
4. 200
Estimate the height of a 12 oz pop can in cm.
1. 5
2. 15
3. 8
4. 12
Guess the perimeter in cm of the following figure.
1. 16
2. 4
3. 20
4. 8
Complete the following:
Length of paper = .35m, _______cm, ______mm
Width of a filmstrip = _____m, 3.5cm, ______mm
Length of 2 meter sticks end to end 2m, _____cm, ____mm
1. 350 cm, 3.5 mm
  35 m, 3.5 mm
  2 cm, 200 mm
2. 35 cm, 350 mm
  .035 m, 35 mm
  200 cm, 2000 mm
3. 3.5 cm, .035 mm
  .0035 m, .035 mm
  20 cm, 2 mm
4. .035 cm, 350 mm
  350 m, 3500 mm
  .02 cm, 20 mm
10mm equals ______cm
1. 1
2. 100
3. .01
4. .001
which is the correct order from smallest to largest?
1. meters,kilometers,centimeters,millimeters
2. centimeters,meters,millimeters,kilometers
3. millimeters,centimeters,meters,kilometers
4. none of the above