← All Standards

Grade 2

• Geometry

  • 2.G.1
  • 2.G.3

• Measurement & Data

  • 2.MD.10

• Numbers & Operations: Base Ten

  • 2.NBT.5
  • 2.NBT.6
  • 2.NBT.7
  • 2.NBT.9

• Operations & Algebraic Thinking

  • 2.OA.1
  • 2.OA.2
  • 2.OA.3

CCSS Math Standard: 2.OA.2

Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Math Curiosity: Magic Triangles

Can you make each side of this triangle add up to 9 using the digits 1-6?