Build an array of 3 equal addends (2.OA.C.4):
Row 1 will be a ★ entry for 5
Row 2 will be a ★ entry for 5
Row 3 will be a ★ entry for 5
| ★ | ★ | ★ | ★ | ★ |
| ★ | ★ | ★ | ★ | ★ |
| ★ | ★ | ★ | ★ | ★ |
★★★★★ + ★★★★★ + ★★★★★ = 15
Add the following 3 numbers:
5 + 5 + 5
Add up the entries in blue for Column 2
| 5 | |
| 5 | |
| + | 5 |
| 5 |
Column 2 → 5 + 5 + 5 = 15
Since 15 is greater than 9, we take the digit farthest to the right of our answer which is 5
We also carry the digit farthest to the left which is 1 for Column 1
Add up the entries in blue for Column 1
| 1 | |
| 5 | |
| 5 | |
| + | 5 |
| 1 | 5 |
We carry a value of 1 from the last step
Column 1 → Bring down the 1 from Column 1 and we are finished
Final Answer
15
Test Your Knowledge?
- The + symbol means we ___ numbers
- When the sum of numbers in a column is 10 or more, we _____ a value in the next column to the left
Common Core State Standards In This Lesson
2.OA.C.4
What is the Answer?
15
How does the Addition of 3 or more numbers Calculator work?
Free Addition of 3 or more numbers Calculator - This calculator performs addition with carrying and an addition grid for 3 or more numbers.
This calculator has 1 input.
This calculator has 1 input.
What 4 concepts are covered in the Addition of 3 or more numbers Calculator?
- addition
- math operation involving the sum of elements
- addition of 3 or more numbers
- basic math
- Elementary math subject to help students understand fundamentals, before moving on to more difficult subjects
- carrying
