Lesson 1 Review

Using Doubles

100

What is 6+6=?

12

200

4 + 5 = ?

What doubles can you use to help you solve the equation?

What is the correct answer?

4 + 4 = 8 

8 + 1 = 9 

4 + 5 = 9

300

Why do we use doubles sometimes when we are working on a addition equations? 

Doubles are something we know off the top of our head. So we can do that plus one more to find the answer faster.m

Deep thinking

100

What is the most common words that tell us a word problem wants you to add?

*Its two words*

In all

200

Find 7 + 8. Tell whether each equation shows how to make 10 to find the sum. 

a) 8 + 3 + 5 

b) 7 + 3 + 5 

c) 4 + 3 + 8

a) no 

b) yes

c) no 

300

Which of the following can be used to find 2 + 3?

a.) 2 + 2 + 1 

b.) 3 + 3 + 1 

c.) 1 + 1 + 3 

d.) 1 + 1 + 2 

a.) 2 + 2 + 1

c.) 1 + 1 + 3 

Word problems

100

Marc gives 7 pencils to his friends. Then Marc gives 4 pencils to his family. How many pencils did Marc give away in all. 

11 pencils

200

I have 7 dogs and Drew has 3 dogs. How many dogs do we have in all?

10 dogs 

300

Ana has 3 cat cards and 3 dog cards. Skylar has 6 dog cards. How many cards do they have in all?

3 + 3 = 6 

6 + 3 = 9 

9 cards in all