Common Core
3.OA.D.8
4 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 3 Math · Chapter 2 · Lesson 3
Estimating Sums and Differences
A quick answer that tells you if the real one is sensible.
Grade 3 Math · Chapter 3 · Lesson 10
Two-Step Problems With a Letter
Naming the number you do not know yet.
Grade 3 Math · Chapter 6 · Lesson 3
Questions that need two readings.
Grade 3 Math · Chapter 7 · Lesson 3
Two-Step Problems With All Four Operations
Working out which operations, and in what order.