Adding 3-Digit Numbers without Regrouping
Add hundreds, tens, and ones without carrying
Adding 3-Digit Numbers without Regrouping
Add hundreds, tens, and ones without carrying
Math - Grade 2-3
- 1
Find the sum: 234 + 125.
Add the ones first, then the tens, then the hundreds.
The sum is 359 because 4 + 5 = 9, 3 tens + 2 tens = 5 tens, and 2 hundreds + 1 hundred = 3 hundreds. - 2
Find the sum: 412 + 326.
The sum is 738 because 2 + 6 = 8, 1 ten + 2 tens = 3 tens, and 4 hundreds + 3 hundreds = 7 hundreds. - 3
Add 153 + 224.
Line up the digits by place value before adding.
The sum is 377 because the ones add to 7, the tens add to 7, and the hundreds add to 3. - 4
A class has 241 blue counting cubes and 328 red counting cubes. How many counting cubes are there in all?
There are 569 counting cubes in all because 241 + 328 = 569. - 5
Find the sum: 620 + 134.
Remember that zero ones plus four ones is four ones.
The sum is 754 because 0 + 4 = 4, 2 tens + 3 tens = 5 tens, and 6 hundreds + 1 hundred = 7 hundreds. - 6
Add 305 + 482.
The sum is 787 because 5 + 2 = 7, 0 tens + 8 tens = 8 tens, and 3 hundreds + 4 hundreds = 7 hundreds. - 7
Mia read 123 pages in one book and 456 pages in another book. How many pages did she read altogether?
Add the pages from both books to find the total.
Mia read 579 pages altogether because 123 + 456 = 579. - 8
Find the sum: 271 + 418.
The sum is 689 because 1 + 8 = 9, 7 tens + 1 ten = 8 tens, and 2 hundreds + 4 hundreds = 6 hundreds. - 9
Add 132 + 243 + 321.
You can add three numbers by adding each place value column.
The sum is 696 because 2 + 3 + 1 = 6, 3 tens + 4 tens + 2 tens = 9 tens, and 1 hundred + 2 hundreds + 3 hundreds = 6 hundreds. - 10
A store sold 214 pencils on Monday and 375 pencils on Tuesday. How many pencils did the store sell in all?
The store sold 589 pencils in all because 214 + 375 = 589. - 11
Find the sum: 506 + 273.
Keep each digit in the correct place value column.
The sum is 779 because 6 + 3 = 9, 0 tens + 7 tens = 7 tens, and 5 hundreds + 2 hundreds = 7 hundreds. - 12
Add 361 + 527.
The sum is 888 because 1 + 7 = 8, 6 tens + 2 tens = 8 tens, and 3 hundreds + 5 hundreds = 8 hundreds. - 13
A farmer picked 432 apples from one tree and 157 apples from another tree. How many apples did the farmer pick in all?
Add 432 and 157 to find the total number of apples.
The farmer picked 589 apples in all because 432 + 157 = 589. - 14
Find the missing sum: 245 + 333 = ____.
The missing sum is 578 because 245 + 333 = 578. - 15
A library has 342 storybooks and 216 science books. How many books are there altogether?
Add the storybooks and science books together.
There are 558 books altogether because 342 + 216 = 558.