Adding to and Subtracting from 20

what does the ( - ) symbol mean ?

• to add

• to put together

• to take away from

What does the (+) symbol mean?

• To subtract

• to take away from

• to put together

• to add

Look at the picture and answer

 $\ \$   $\ \ \ 10+10=_{ }$  

• 11

• 0

• 100

• 20

 $20-10=?$  What is the answer?

• 5

• 10 

• 15 

• 20 

10-4=?

• 5

• 6

• 8

• 4

WHat is the answer?

• 2

• 3

• 4

• 5

We bought 9 cakes, my brother ate 2, how many do I have left?

• 7

• 5

• 2

• 3

If the teacher has 3 students in class and 14 more walked in, how many students does she have to teach?

• 11

• 9

• 17

• 20