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Count by tens and hundreds to 1,000 starting with any number. Add and subtract through 999 using concrete models, drawings, and symbols which convey strategies connected to place value understanding.

Updated 5 months ago

1. Drawings

180 seconds

What is the answer for 56 - 10?

2. Slide

60 seconds

Adding two numbers together to find a sum. Subtracting one number from another to find the difference. Practicing with numbers between 0 and 1000.

Adding and Subtracting 0-1000

3. Slide

60 seconds

Addition: The process of combining two or more numbers together to find a sum. Subtraction: The process of taking one number away from another to find the difference. 0-1000: The range of numbers between 0 and 1000.

Concepts:

4. Poll

60 seconds

What is the best way to add and subtract numbers from 0 to 1000?

- Using your fingers
- Memorizing the answers
- Using a number line
- Use base 10 blocks

5. Drawings

270 seconds

Draw / write: What strategies can you use to add and subtract 0-1000?

6. Slide

20 seconds

What if you have a number plus 10? Do you need to think about the ones place? Rewrite the problem if you need! 30-10=_____ 56-10=_____ 43-10=_____ 77-10=_____

Draw / write: How can we use place value understanding to help us add and subtract numbers?

7. Slide

60 seconds

456-100=____ 888+100=____ 101-100=____ 594+100=____

What if you add 100 to a number do we worry about the tens or ones place?

8. Poll

10 seconds

How can you use counting by tens and hundreds to help you add and subtract?

- Only look at the 10's or 100's place
- Worry about all the numbers

9. Slide

180 seconds

Drawings (Base 10 Blocks) Touch Math With your fingers

How did you use drawings, concrete models, and symbols to help you add and subtract?

10. Drawings

120 seconds

What is 59-10?

11. Drawings

120 seconds

77-10=___

12. Drawings

120 seconds

367-10=___

13. Drawings

120 seconds

13-10=___

14. Drawings

360 seconds

What is 123-100?

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