Math Activity #8: Large number addition review
1. Listen and follow along with the story: https://schmedia.pearsoncanada.ca/mlb/index.html?code=25AS-FR
2. Complete the accompanying activity. Here are the instructions in English: “Move the balls to the left to make the number indicated at the bottom of the page. Click “varifier” to see if it is the same number. How many groups of 10 are there in the number? How many ones? How many more balls are needed to make 100?
Please write some equations to go with each question you answer.
3. Watch the video on strategies for adding 2 digit numbers: https://www.khanacademy.org/math/arithmetic/arith-review-add-subtract/arith-review-strategies-for-adding-within-100/v/example-exercises-on-ways-to-add-two-digit-numbers
(Optional) Try the activities below: https://www.khanacademy.org/math/arithmetic/arith-review-add-subtract/arith-review-strategies-for-adding-within-100/e/select-strategies-for-adding-within-100
4. Practice some addition equations to 100. Here is a worksheet you can use or you can write your own. Don’t forget to use your strategies:
- Grouping 10’s and 1’s separately
- Using visuals/manipulatives
- Lining up and “carrying over”
- Using a number line
***Grade 1’s please complete a minimum of 5 questions from the above worksheet
(Optional): Play Race to 100
Take turns rolling a die or drawing a card. Move forward as many spaces as the number you rolled/drew. Keep adding and moving forward until one person reaches 100!
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