Common Core
2.MD.A.1
4 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 2 Math · Chapter 2 · Lesson 1
A ruler has the units printed on already.
Grade 2 Math · Chapter 2 · Lesson 2
Big things need a bigger unit.
Grade 2 Math · Chapter 2 · Lesson 3
Another pair of units, used the same way.
Measuring Around the World · Chapter 1 · Lesson 1
A meter is 100 centimeters. You are about 120 of them.