Add & Subtract Within 1000 — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. The library had 450 books. They received 175 new ones, then loaned out 128. How many books are there now?
A) 497
B) 503
C) 625
D) 753
450 + 175 = 625, then 625 - 128 = 497 books remain.
2. A farmer had 820 apples. He sold 245 in the morning and 168 in the afternoon. How many apples are left?
A) 407
B) 413
C) 575
D) 652
245 + 168 = 413, then 820 - 413 = 407 apples.
3. Maya saved $260. She earned $135 more, then spent $178 on a bike part. How much does she have left?
A) 217
B) 223
C) 395
D) 573
260 + 135 = 395, then 395 - 178 = 217 dollars.
4. A bus had 312 riders. At stop 1, 145 got off. At stop 2, 108 got on. How many riders are on the bus now?
A) 275
B) 267
C) 355
D) 565
312 - 145 = 167, then 167 + 108 = 275 riders.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A store had 540 shirts. 185 sold Monday, then 92 more sold Tuesday. Shirts left = 263
185 + 92 = 277, then 540 - 277 = 263 shirts remain.
2. A pond has 380 fish. 145 are added, then 62 are taken for a tank. Fish now = 463
380 + 145 = 525, then 525 - 62 = 463 fish.
3. Jon had 425 stickers. He gave 138 away, then got 214 more. Stickers now = 501
425 - 138 = 287, then 287 + 214 = 501 stickers.
4. A parking lot had 612 cars. 245 left, then 127 arrived. Cars now = 494
612 - 245 = 367, then 367 + 127 = 494 cars.
5. A class read 156 pages Monday, 204 Tuesday, and 189 Wednesday. Total pages = 549
156 + 204 = 360, then 360 + 189 = 549 pages.