Curated OER
Addition of Three Numbers (A)
One hundred problems provide practice adding 3, four-digit numbers. The answer key is included.
Curated OER
Four-Digit Plus Three-Digit Addition (A)
The worksheet provides 100 problems that require adding four and three-digit numbers. The answer key is included.
Mr. Martini's Classroom
Mr. Martini's Classroom: Math Addition With Carrying 2, 3, and 4 Digits
Students solve two, three, and four-digit addition problems with carrying. The sum turns blue if correct.