Day 25: Add Ones or Tens

Introduction

Hi Mathematicians,

What is 45 + 1? What is 45 + 10? In today’s lesson, you will watch a video from Khan Academy to learn more about adding ones and tens. Watch the video and then complete the activity below. 

 

---

Video

---

 Activity

 In your math journal: Draw pictures to solve the following problems. Type your answers in to check to see if you were correct! 

 

 

 

[CC BY 4.0] UNLESS OTHERWISE NOTED | IMAGES: LICENSED AND USED ACCORDING TO TERMS OF SUBSCRIPTION