Addition and Subtraction Problem Solving Worksheet for 10-Year-Olds

Instructions

Read each problem carefully. Show your work on a separate piece of paper. Write your final answer in the space provided. Remember to check if a problem has more than one step!

Part 1: Warm-Up Problems

1. Maya is playing a video game. She starts with 750 points. In the first level, she earns 225 more points. In the second level, she loses 110 points by hitting an obstacle. How many points does she have now?
   
   Answer: ____________________


2. Leo wants to buy a scooter that costs $120. He has already saved $55. He then does chores for his neighbor and earns another $32. How much more money does he need to save to buy the scooter?
   
   Answer: ____________________


3. The school library started the year with 1,540 books. Over the year, 178 books were lost or damaged, but the school also received a donation of 250 new books. How many books did the library have at the end of the year?
   
   Answer: ____________________

Part 2: Thinking It Through

4. A concert hall has 2,500 seats. For the first show, 1,985 tickets were sold. For the second show, 2,112 tickets were sold. How many more people attended the second show than the first?
   
   Answer: ____________________


5. The Blue River is 2,340 miles long. The Green River is 1,450 miles long. The Red River is 875 miles shorter than the Blue River. Which is longer, the Green River or the Red River, and by how many miles?
   
   Answer: The _______________ River is longer by _______________ miles.

Part 3: Brain Boosters

6. A baker starts the day with 300 pounds of flour. He uses 85 pounds for bread and 112 pounds for cakes. He then gets a delivery of another 150 pounds of flour. How many pounds of flour does the baker have at the end of the day?
   
   Answer: ____________________


7. Chloe is tracking her reading. On Monday, she read some pages. On Tuesday, she read 45 more pages. On Wednesday, she only read 12 pages. By the end of Wednesday, she was on page 182 of her book. How many pages had she read *before* Tuesday?
   
   Answer: ____________________

Answer Key

1. 865 points
   (Step 1: 750 + 225 = 975. Step 2: 975 - 110 = 865)
2. $33
   (Step 1: $55 + $32 = $87. Step 2: $120 - $87 = $33)
3. 1,612 books
   (Step 1: 1,540 - 178 = 1,362. Step 2: 1,362 + 250 = 1,612)
4. 127 more people
   (Calculation: 2,112 - 1,985 = 127)
5. The Red River is longer by 15 miles.
   (Step 1: Find the length of the Red River: 2,340 - 875 = 1,465 miles. Step 2: Compare to the Green River: 1,465 - 1,450 = 15 miles)
6. 253 pounds
   (Step 1: 300 - 85 - 112 = 103. Step 2: 103 + 150 = 253)
7. 125 pages
   (Work backward. End of Wednesday: 182. Before Wednesday's reading: 182 - 12 = 170. Before Tuesday's reading: 170 - 45 = 125. This is the total at the end of Monday.)