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Add More Than 2 Numbers
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What you will learn from this videoWhat you will learn
- How to ADD more than 2 numbers using place value.
- That you can ADD more than 2 numbers using many strategies.
- How this knowledge can help us take care of Venus fly traps, create DIY projects, and eat chocolate rabbits!
- Discussion Questions
Before Video
Add 6 + 14. What strategy did you use to solve the problem?ANSWER6 + 14 = 20. I made a ten by adding 6 + 4, then added another 10.
34 + 16 = 50. I broke 16 up in 10 and 6. 34 + 6 = 40. 40 + 10 = 50.
Break 21 into 2 tens and 1 one. Break 63 into 6 tens and 3 ones. Add the ones: 2 + 1 = 3. Add the tens: 6 + 3 = 9. So, the solution is 3 ones and 9 tens, which is 93.
Break 43 into 4 tens and 3 ones. Break 49 into 4 tens and 9 ones. Add the ones: 3 + 9 = 12. Add the tens: 4 + 4 = 8. This are 12 ones and 8 tens. Regroup 10 ones into 1 ten. The total is 2 ones and 9 tens, which is 92.
Break 315 into 3 hundreds, 1 ten, and 5 ones. Break 134 into 1 hundred, 3 tens, and 4 ones. Add the ones: 5 + 4 = 9. Add the tens: 1 + 3 = 4. Add the hundreds: 3 + 1 = 4. So, the solution is 4 hundreds, 4 tens, and 9 ones, which is 449.
After Video
Add 6 + 5 + 7. What numbers did you add first?ANSWERAdd 6 + 5 = 11. Then, add the third number. 11 + 7 = 18. The sum is 18.
Add 15 + 5 first. 15 + 5 = 20. Then, add the other number. 20 + 47 = 67. The sum is 67.
First, add 13 + 7 and 19 + 21. I know that 13 + 7 = 20. Add 19 + 21 = 19 + 1 + 20 = 20 + 20 = 40. Then, add 20 + 40 = 60. The sum is 60.
I can start with any two numbers. I start with 14 + 13 = 27. Then, add in the next number. 27 + 21 = 48. Then, add the last number. 48 + 10 = 58.
I can start with any two numbers. I start with 212 + 214 = 426. Then, add in the third number. 426 + 330 = 756.
- Vocabulary
- Place Value DEFINE
The value of a digit based on its position in a number.
- Add DEFINE
The process of putting parts together to find a new total.
- Addend DEFINE
A quantity being added.
- Sum DEFINE
The result of adding.
- Breaking Apart Numbers DEFINE
The process of taking a number and writing it as the sum of 2 or more parts. You could break apart a number by place value (ex. 43 = 40 + 3) or break apart a number to help you make a ten (ex. 12 = 8 + 4).
- Make a Ten DEFINE
To choose and add numbers that make a tens number, like 10, 20, or 30.
- Place Value DEFINE
- Reading Material
- Practice Word Problems
- Practice Number Problems
- Lesson Plan
- Teacher Guide
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