# Properties of Operations: Addition and Subtraction

### Playlist Title

Properties of Operations: Addition and Subtraction

Play these games to practice adding and subtracting:
1. Museum of Tens (PBS)

• Click the number to tell Curious George how many more things are needed to equal 10.
2. Subtraction Sled (Toy Theater)
• Click on the number to show how many more children are needed to fill up all 10 sleds.
3. Save the Whale (ICT Games)
• Drag the piece of pipe with the number of units needed to make the pipe on top equal 10.
4. Select the Related Addition Facts (CK-12)
• Identify the related addition fact for each number sentence.
5. Select the Related Subtraction Facts (CK-12)
• Identify the related subtraction fact for each number sentence.

### Museum of Tens (PBS)

Help Curious George fill in the missing museum artifacts to equal ten.

### Subtraction Sled (Toy Theater)

Help figure out how many more kids are needed to fill ten sleds then watch them slide down the hill!

### Save the Whale (ICT Games)

Send the whale back into the ocean by finding the pipe that will bring the length to equal ten.

### Select the Related Addition Facts (CK-12)

Just the facts! Jump in and practice your addition fact families.

### Select the Related Subtraction Facts (CK-12)

Is that a fact? Put your thinking cap on and practice your subtraction fact families.

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