Add & Subtract Within 1000 — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. A school library has 348 fiction books and 256 nonfiction books. How many books are there in all?
A) 504
B) 594
C) 604
D) 614
8+6=14 write 4 carry 1. 1+4+5=10 write 0 carry 1. 1+3+2=6. Total 604 books.
2. Mia had 725 stickers. She gave 238 to friends. How many stickers does she have left?
A) 487
B) 497
C) 513
D) 587
Ones: 15-8=7 borrow 1. Tens: 1-3 borrow, 11-3=8. Hundreds: 6-2=4. Left 487.
3. A farmer collected 432 eggs on Monday and 289 eggs on Tuesday. How many eggs in total?
A) 611
B) 621
C) 711
D) 721
2+9=11 write 1 carry 1. 1+3+8=12 write 2 carry 1. 1+4+2=7. Total 721 eggs.
4. A store had 860 apples and sold 475. How many apples are left?
A) 385
B) 395
C) 475
D) 485
Ones: 10-5=5 borrow 1. Tens: 5-7 borrow, 15-7=8. Hundreds: 7-4=3. Left 385.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A team scored 248 points in one game and 175 in the next. Total points: 423
8+5=13 write 3 carry 1. 1+4+7=12 write 2 carry 1. 1+2+1=4. Total 423.
2. There are 615 kids at a fair and 289 leave early. Kids still at the fair: 326
Ones: 15-9=6 borrow 1. Tens: 0-8 borrow, 10-8=2. Hundreds: 5-2=3. Left 326.
3. A bookstore has 356 mystery books and 427 picture books. Total books: 783
6+7=13 write 3 carry 1. 1+5+2=8 tens. 3+4=7 hundreds. Total 783.
4. A truck carried 900 boxes and dropped 347 at a warehouse. Boxes left on the truck: 553
Ones: 10-7=3 borrow 1. Tens: 9-4=5. Hundreds: 8-3=5. Left 553.
5. A class read 268 pages in the morning and 315 in the afternoon. Total pages read: 583
8+5=13 write 3 carry 1. 1+6+1=8 tens. 2+3=5 hundreds. Total 583.