How to Break Apart Numbers to Make Addition Easier
When adding numbers, sometimes it’s helpful to break them apart into smaller, easier-to-add parts. Let’s take an example to see how breaking apart 28 makes adding 65 + 28 simpler.
Step-by-Step Guide:
Let’s look at the problem:
65 + 28
- Break Apart 28:
We can split 28 into two parts: 5 and 23. This makes the numbers easier to add. - Add 65 + 5 First:
Start by adding 65 + 5. This gives you 70. - Add the Remaining 23:
Now, take the 70 and add the remaining 23.
70 + 23 = 93
So, 65 + 28 equals 93.
Here’s How It Looks in the Equation:
65 + 28 = 65 + 5 + 23 = 70 + 23 = 93
Breaking apart numbers like this can make adding much easier and faster. Try it with other numbers to see how it works!
Quiz
1) Break apart 18 to help you find 29 + 18 .
1) Fill in the missing numbers.
| 29 | + | 18 | = | 29 | + | + | 17 | |
| = | + | 17 | ||||||
| = |
2) Break apart 28 to help you find 66 + 28 .
2) Fill in the missing numbers.
| 66 | + | 28 | = | 66 | + | + | 24 | |
| = | + | 24 | ||||||
| = |
3) Break apart 27 to help you find 25 + 27 .
3) Fill in the missing numbers.
| 25 | + | 27 | = | 25 | + | + | 22 | |
| = | + | 22 | ||||||
| = |
4) Break apart 27 to help you find 15 + 27 .
4) Fill in the missing numbers.
| 15 | + | 27 | = | 15 | + | 5 | + | |
| = | + | 22 | ||||||
| = |
5) Break apart 29 to help you find 25 + 29 .
5) Fill in the missing numbers.
| 25 | + | 29 | = | 25 | + | + | 24 | |
| = | + | 24 | ||||||
| = |
6) Break apart 18 to help you find 66 + 18 .
6) Fill in the missing numbers.
| 66 | + | 18 | = | 66 | + | + | 14 | |
| = | + | 14 | ||||||
| = |
7) Break apart 27 to help you find 26 + 27 .
7) Fill in the missing numbers.
| 26 | + | 27 | = | 26 | + | 4 | + | |
| = | + | 23 | ||||||
| = |
8) Break apart 29 to help you find 49 + 29 .
8) Fill in the missing numbers.
| 49 | + | 29 | = | 49 | + | + | 28 | |
| = | + | 28 | ||||||
| = |
9) Break apart 29 to help you find 18 + 29 .
9) Fill in the missing numbers.
| 18 | + | 29 | = | 18 | + | + | 27 | |
| = | + | 27 | ||||||
| = |
10) Break apart 26 to help you find 69 + 26 .
10) Fill in the missing numbers.
| 69 | + | 26 | = | 69 | + | + | 25 | |
| = | + | 25 | ||||||
| = |
Answers:
1) 1/30/47
2) 4/ 70/94
3) 5/30/52
4) 2/22/42
5) 5/30/54
6) 4/70/84
7) 2/33/53
8) 1/50/78
9) 2/20/47
10) 1/70/95