Shark Learning
MATHAddition

Three-Addend Mental Sums (1- & 2-Digit)

Three addends with a mix of 1- and 2-digit numbers for mental fluency.

Key Concepts

Mentally add; find make-ten pairs.

Practise this lesson

Three-Addend Mental Sums (1- & 2-Digit)

Open worksheets

Sharky Tutor

Coming Soon
Hi! I'm here to help.
Are you stuck on a specific question?
How do I start this?
Shark Learning Systems © 2026 • Terms • Privacy