← All Standards

Grade 2

• Geometry

  • 2.G.1
  • 2.G.3

• Measurement & Data

  • 2.MD.8
  • 2.MD.10

• Numbers & Operations: Base Ten

  • 2.NBT.2
  • 2.NBT.4
  • 2.NBT.5
  • 2.NBT.6
  • 2.NBT.7
  • 2.NBT.8
  • 2.NBT.9

• Operations & Algebraic Thinking

  • 2.OA.1
  • 2.OA.2
  • 2.OA.3

CCSS Math Standard: 2.NBT.6

Add up to four two-digit numbers using strategies based on place value and properties of operations.

Gr 1-4

Spring Math Worksheets: Addition and Subtraction

Four sets of 2-digit and 3-digit addition and subtraction practice. But the unknown isn’t where you expect it to be!

Gr 2-5

Math Curiosity: Goldbach’s Conjecture

Can any even number be written as the sum of two primes? Goldbach thought so, but we haven’t proven it… yet!

Gr 1-5

Math Curiosity: Four Squares

Every positive integer can be written as the sum of (at most) four perfect squares!

Gr 1, 2, 3, 4, 8

Math Curiosity: Magic Squares

Imagine a 3×3 square in which every row, column, and diagonal have the same sum. That’s a magic square!

Gr 1-4

Math Curiosity: Palindromic Number Conjecture

Using this one weird trick, it seems that you can turn any number into a palindrome!

Gr 1-4