Worked Example 1
How Much Longer?
A pencil is 16 centimeters long. A crayon is 9 centimeters long. How much longer is the pencil?
- 1Both lengths are in centimeters.
- 2Find the difference: 16 − 9 = 7
Answer: 7 centimeters longer
Florida Grade 2 Math · Measurement
MA.2.M.1.2: Comparing Two Lengths
What this Grade 2 benchmark means, worked examples, common mistakes, and a free printable worksheet.
Created by a Florida mom · Published by Tropical Learning LLC
What Is Benchmark MA.2.M.1.2?
Students measure two objects using the same unit and find how much longer or shorter one is than the other. Measurements are to the nearest inch, foot, yard, centimeter, or meter.
To find the difference, subtract the shorter length from the longer length. Both lengths must be in the same unit.
Official benchmarkMeasure the lengths of two objects using the same unit and determine the difference between their measurements.
How it is tested: Grade 2 students take FAST Star Math, Florida's math test for Kindergarten through Grade 2.
Worked Examples
Worked Example 2
How Much Shorter?
A red ribbon is 34 inches long. A blue ribbon is 52 inches long. How much shorter is the red ribbon?
- 1Both lengths are in inches.
- 2Find the difference: 52 − 34 = 18
Answer: 18 inches shorter
Common Mistakes to Watch For
Adding instead of subtracting
Wrong:The pencil is 16 + 9 = 25 centimeters longer.
"How much longer" means find the difference: 16 − 9 = 7 centimeters.
Comparing lengths in different units
Wrong:A book is 10 inches and a pen is 14 centimeters, so the pen is 4 longer.
Measure both objects in the same unit before you compare them.
Helpful Math Tip
Measure two family members' shoes, or two toys, with the same ruler, then ask "How much longer is one than the other?"
Related Grade 2 Skills
Make Florida Math Practice More Fun
Help your child build math confidence with original interactive questions aligned with Florida's B.E.S.T. Mathematics Standards.
Start Practicing FreeIndependent Educational Platform. FastChomp is published by Tropical Learning LLC and is not affiliated with, sponsored by, or endorsed by the Florida Department of Education. FAST and Star assessment names are referenced for informational purposes only. FastChomp practice questions are original educational materials, not official Florida FAST assessment questions.