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Curipod generated lesson: "double digit addition". #1-4

Updated a month ago

1. Word cloud

120 seconds

What is 10 + 9?

2. Slide

60 seconds

Double digit addition is when you add two numbers both with two digits. It's important to line up the digits in each number before adding. Remember to add the digits in the ones column first, then the tens column.

Double Digit Addition

3. Slide

60 seconds

Addends – The numbers being added together. Sum – The answer to an addition problem. Plus Sign (+) – A sign used to represent addition.

Concepts:

4. Slide

60 seconds

In the early 1900s, people used a device called a comptometer to help with double digit addition. Double digit addition is one of the oldest forms of math. It has been around since the times of ancient Greece. The most efficient way to solve double digit addition problems is to use the standard algorithm, which was developed by Gottfried Wilhelm Leibniz in the 17th century.

Did you know?

5. Open question

300 seconds

How can you use addition to solve a problem involving two-digit numbers?

6. Open question

300 seconds

What strategies can you use to help you solve double digit addition problems?

7. Open question

300 seconds

What strategies did you use to solve the double digit addition problem?

8. Open question

300 seconds

How did you feel when you successfully completed the double digit addition problem?

9. Drawings

450 seconds

Brain break: Draw a walking sandwich with legs and arms, enjoying a picnic in a park

10. Drawings

1260 seconds

Question: What is the sum of 15 and 32? Clues: • The first number has two digits. • Add the numbers in the ones place first. • Then add the numbers in the tens place. In pairs: Select and solve one of the tasks: A. Work in pairs to solve the problem using a drawing. B. Explain your solution to the class.

11. Poll

60 seconds

What is the sum of 12 + 14?

- 24
- 25
- 23
- 26

12. Poll

60 seconds

What is the sum of 34 + 21?

- 51
- 53
- 54
- 55

13. Poll

60 seconds

What is the sum of 47 + 19?

- 63
- 64
- 65
- 66

14. Poll

60 seconds

What is the sum of 56 + 38?

- 94
- 91
- 93
- 92

15. Poll

60 seconds

What is the sum of 29+47?

- 73
- 74
- 76
- 75

16. Open question

180 seconds

Work together in pairs: What is the sum of 18 + 19?

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