partial sum facts

Views:
 
Category: Education
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

PowerPoint Presentation:

Use what you know to help you solve addition facts in a more timely fashion. How you ask? Use the partial sums method to help you out. For instance, with the problem 11 + 2…. Ones Ten s Ask yourself 10 + 2 = ? 12 Now, add what is left over. 1 And the answer is… 13 Let’s Try A nother One!

PowerPoint Presentation:

Ones Ten s Ask yourself 10 + 3 = ? 13 Now, add what is left over. 2 And the answer is… 15 Let’s Try A nother One!

PowerPoint Presentation:

Ones Ten s Ask yourself 10 + 4 = ? 14 Now, add what is left over. 3 And the answer is… 17 Let’s Try A nother One!

PowerPoint Presentation:

Ones Ten s Ask yourself 10 + 5 = ? 15 Now, add what is left over. 1 And the answer is… 16 Let’s Try A nother One!

PowerPoint Presentation:

Ones Ten s Ask yourself 10 + 5 = ? 15 Now, add what is left over. 3 And the answer is… 18 Let’s Try A nother One!

PowerPoint Presentation:

Ones Ten s Ask yourself 10 + 6 = ? 16 Now, add what is left over. 2 And the answer is… 18 Let’s Try A nother One!

PowerPoint Presentation:

Ones Ten s Ask yourself 10 + 6 = ? 16 Now, add what is left over. 4 And the answer is… 20 Let’s Try A nother One!

PowerPoint Presentation:

Ones Ten s Ask yourself 10 + 2 = ? 12 Now, add what is left over. 7 And the answer is… 19

authorStream Live Help