# Early math

Contents

Addition and subtraction within 20

ContinueUp next: Find missing number (add and subtract within 20)

Addition and subtraction within 100

ContinueUp next: Subtract 2-digit numbers (no regrouping)

Addition and subtraction within 1000

ContinueUp next: Add 10s and 100s (no regrouping)

Measurement and data

ContinueUp next: Order by length