Keep students engaged with the fastest and easiest way to learn how to mentally add two-digit numbers by any one or two-digit number using step-by-step animations.

These step-by-step animated worked examples make it substantially easier for students to recognize patterns and understand the steps involved when mentally adding by two-digits. Students will be able to instantly pick up this pivotal fundamental skill.

This content is aligned with Common Core State Standard 1.NBT.C.4, 1.NBT.C.5, and 2.NBT.B.5.

It is perfect for presenting in either a classroom, small group or 1:1 setting.

This digital resource includes:

1) Add Two-Digit number by 10 (1.NBT.C.5)

⭐ Self-paced PowerPoint version with all 90 examples (from 10+10 to 99+10)
⭐ Auto-paced PowerPoint with all 90 examples (from 10+10 to 99+10)
⭐ Link to a video including narration & animation for this skill
⭐ Documentation guide

2) Add Two-Digit number by One-Digit number (1.NBT.C.4)

⭐ Self-paced PowerPoint version with 100 examples

⭐ Auto-paced PowerPoint version with 100 examples

⭐ Link to a video including narration & animation for this skill

⭐ Documentation guide

3) Add Two-Digit number by multiple of ten (1.NBT.C.4)

⭐ Self-paced PowerPoint version with 100 examples

⭐ Auto-paced PowerPoint with 100 examples

⭐ Link to a video including narration & animation for each skill skill

⭐ Documentation guide

4) Add Two-Digit number by Two-Digit number (2.NBT.B.5)

⭐ Self-paced PowerPoint version with 100 examples

⭐ Auto-paced PowerPoint with 100 examples

⭐ Link to a video including narration & animation for each skill skill

⭐ Documentation guide