2-Digit Addition with Carry (Ages 7–8)
12 Solved Questions + 12 Practice Questions (Answers at the end)
Part A: Solved Questions
Part B: Practice Questions
Solutions to Practice Questions
Two-Digit Subtraction with Borrowing
What is Borrowing?
Sometimes, when you subtract, the top number is smaller than the bottom number. In such cases, you need to borrow from the tens place.
Example: 52 – 17
Step 1: You cannot subtract 7 from 2. So, borrow 1 from the tens place.
Step 2: Now, the tens place is 4, and the ones place is 12.
Step 3: Subtract: 12 – 7 = 5, and 4 – 1 = 3.
Answer: 35
Solved Examples
1. 63 – 27
Solution: Borrow 1 from 6. Now, 13 – 7 = 6, and 5 – 2 = 3. Answer: 36
2. 70 – 38
Solution: Borrow 1 from 7. Now, 10 – 8 = 2, and 6 – 3 = 3. Answer: 32
3. 85 – 49
Solution: Borrow 1 from 8. Now, 15 – 9 = 6, and 7 – 4 = 3. Answer: 36
4. 91 – 56
Solution: Borrow 1 from 9. Now, 11 – 6 = 5, and 8 – 5 = 3. Answer: 35
5. 42 – 19
Solution: Borrow 1 from 4. Now, 12 – 9 = 3, and 3 – 1 = 2. Answer: 23
6. 53 – 28
Solution: Borrow 1 from 5. Now, 13 – 8 = 5, and 4 – 2 = 2. Answer: 25
7. 60 – 34
Solution: Borrow 1 from 6. Now, 10 – 4 = 6, and 5 – 3 = 2. Answer: 26
8. 74 – 39
Solution: Borrow 1 from 7. Now, 14 – 9 = 5, and 6 – 3 = 3. Answer: 35
9. 81 – 47
Solution: Borrow 1 from 8. Now, 11 – 7 = 4, and 7 – 4 = 3. Answer: 34
10. 92 – 58
Solution: Borrow 1 from 9. Now, 12 – 8 = 4, and 8 – 5 = 3. Answer: 34
11. 35 – 17
Solution: Borrow 1 from 3. Now, 15 – 7 = 8, and 2 – 1 = 1. Answer: 18
12. 46 – 29
Solution: Borrow 1 from 4. Now, 16 – 9 = 7, and 3 – 2 = 1. Answer: 17
Practice Exercise
- 54 – 28 = ?
- 62 – 37 = ?
- 73 – 49 = ?
- 80 – 56 = ?
- 91 – 64 = ?
- 45 – 19 = ?
- 50 – 23 = ?
- 67 – 38 = ?
- 76 – 48 = ?
- 84 – 57 = ?
- 93 – 65 = ?
- 32 – 16 = ?
Solutions to Practice Exercise
- 54 – 28 = 26
- 62 – 37 = 25
- 73 – 49 = 24
- 80 – 56 = 24
- 91 – 64 = 27
- 45 – 19 = 26
- 50 – 23 = 27
- 67 – 38 = 29
- 76 – 48 = 28
- 84 – 57 = 27
- 93 – 65 = 28
- 32 – 16 = 16
🍎 Addition & Subtraction Word Problems 🍌
Welcome Math Learners!
This lesson will help you understand how to solve addition and subtraction word problems. We’ll use fun visuals and step-by-step explanations to make learning easy and enjoyable!
Word problems tell a story with numbers. Your job is to figure out whether to add or subtract to find the answer.
👀 Visual Learning Tip
Draw pictures to help you understand word problems! If the problem has apples, draw apples. If it has toys, draw toys. This will make the problem easier to solve.
Addition – Putting Together
When we add, we put things together. Look for words like “in all,” “altogether,” or “total” in the problem.
Addition Example
3
2
5
3 apples + 2 apples = 5 apples
Subtraction – Taking Away
When we subtract, we take things away. Look for words like “left,” “remain,” or “how many more” in the problem.
Subtraction Example
6
2
4
6 cookies – 2 cookies = 4 cookies
12 Solved Addition & Subtraction Problems
Problem 1: Apples in All
Sarah has 4 apples. Her friend gives her 3 more apples. How many apples does Sarah have now?
Step 1: Understand the problem. Sarah has some apples and gets more.
Step 2: Decide if we add or subtract. Since she’s getting more, we add.
Step 3: Write the numbers: 4 + 3
Step 4: Calculate: 4 + 3 = 7
Answer: Sarah has 7 apples now.
Problem 2: Toy Cars Left
James had 9 toy cars. He gave 4 toy cars to his brother. How many toy cars does James have left?
Step 1: Understand the problem. James had cars and gave some away.
Step 2: Decide if we add or subtract. Since he’s giving away, we subtract.
Step 3: Write the numbers: 9 – 4
Step 4: Calculate: 9 – 4 = 5
Answer: James has 5 toy cars left.
Problem 3: Total Stickers
Emma has 6 cat stickers and 3 dog stickers. How many stickers does she have altogether?
Step 1: Understand the problem. Emma has two types of stickers.
Step 2: The word “altogether” tells us to add.
Step 3: Write the numbers: 6 + 3
Step 4: Calculate: 6 + 3 = 9
Answer: Emma has 9 stickers altogether.
Problem 4: Pencils Remaining
There were 10 pencils in the box. Sam took 7 pencils. How many pencils are left in the box?
Step 1: Understand the problem. Pencils are being taken from a box.
Step 2: The word “left” tells us to subtract.
Step 3: Write the numbers: 10 – 7
Step 4: Calculate: 10 – 7 = 3
Answer: There are 3 pencils left in the box.
Problem 5: Total Books
In the classroom, there are 8 math books and 5 science books. How many books are there in total?
Step 1: Understand the problem. We have two types of books.
Step 2: The word “total” tells us to add.
Step 3: Write the numbers: 8 + 5
Step 4: Calculate: 8 + 5 = 13
Answer: There are 13 books in total.
Problem 6: Birds Flying Away
There were 15 birds on a tree. 6 birds flew away. How many birds are still on the tree?
Step 1: Understand the problem. Birds are leaving the tree.
Step 2: “Flew away” tells us to subtract.
Step 3: Write the numbers: 15 – 6
Step 4: Calculate: 15 – 6 = 9
Answer: There are 9 birds still on the tree.
Problem 7: Marbles Collected
Tom collected 7 marbles on Monday and 8 marbles on Tuesday. How many marbles did he collect in all?
Step 1: Understand the problem. Tom collected marbles on two days.
Step 2: “In all” tells us to add.
Step 3: Write the numbers: 7 + 8
Step 4: Calculate: 7 + 8 = 15
Answer: Tom collected 15 marbles in all.
Problem 8: Cupcakes Eaten
Lisa baked 12 cupcakes. Her family ate 5 cupcakes. How many cupcakes are left?
Step 1: Understand the problem. Cupcakes are being eaten.
Step 2: “Left” tells us to subtract.
Step 3: Write the numbers: 12 – 5
Step 4: Calculate: 12 – 5 = 7
Answer: There are 7 cupcakes left.
Problem 9: Total Stamps
Mark has 9 dinosaur stamps and 4 animal stamps. How many stamps does he have in total?
Step 1: Understand the problem. Mark has two types of stamps.
Step 2: “In total” tells us to add.
Step 3: Write the numbers: 9 + 4
Step 4: Calculate: 9 + 4 = 13
Answer: Mark has 13 stamps in total.
Problem 10: Balloons Popped
There were 14 balloons at the party. 6 balloons popped. How many balloons are still inflated?
Step 1: Understand the problem. Balloons are popping.
Step 2: “Still inflated” suggests we need to subtract the popped ones.
Step 3: Write the numbers: 14 – 6
Step 4: Calculate: 14 – 6 = 8
Answer: There are 8 balloons still inflated.
Problem 11: Books Read
Anna read 5 books in January and 7 books in February. How many books did she read in these two months?
Step 1: Understand the problem. Anna read books in two months.
Step 2: We need to find the total, so we add.
Step 3: Write the numbers: 5 + 7
Step 4: Calculate: 5 + 7 = 12
Answer: Anna read 12 books in these two months.
Problem 12: Crayons Lost
Jason had 16 crayons. He lost 9 crayons. How many crayons does he have now?
Step 1: Understand the problem. Jason lost some crayons.
Step 2: “Lost” tells us to subtract.
Step 3: Write the numbers: 16 – 9
Step 4: Calculate: 16 – 9 = 7
Answer: Jason has 7 crayons now.
Practice Exercises (12 Questions)
Try solving these problems on your own! Check your answers at the end.
Practice 1: Apples & Oranges
There are 7 apples and 6 oranges in a basket. How many fruits are there in total?
Practice 2: Toy Robots
Mike had 15 toy robots. He gave 8 to his friend. How many toy robots does Mike have now?
Practice 3: Marbles Won
Sarah won 4 marbles in the first game and 5 marbles in the second game. How many marbles did she win altogether?
Practice 4: Pages Read
There are 20 pages in the book. John read 13 pages. How many pages are left to read?
Practice 5: Pencils & Pens
There are 9 pencils and 7 pens on the desk. How many items are on the desk in all?
Practice 6: Cookies Eaten
There were 18 cookies on the plate. The children ate 9 cookies. How many cookies are left?
Practice 7: Stickers Collected
Emma collected 6 star stickers on Monday and 8 moon stickers on Tuesday. How many stickers did she collect in total?
Practice 8: Birds on Wire
There were 14 birds sitting on a telephone wire. 5 birds flew away. How many birds are still on the wire?
Practice 9: Books Borrowed
The library had 11 science books. Students borrowed 6 science books. How many science books are still in the library?
Practice 10: Flowers Picked
There were 16 flowers in the garden. Lucy picked 7 flowers. How many flowers are still in the garden?
Practice 11: Cards Traded
David had 12 trading cards. He traded 5 cards with his friend. How many trading cards does David have now?
Practice 12: Beads Used
Maria had 20 beads. She used 13 beads to make a necklace. How many beads does she have left?
Answers to Practice Exercises
Practice 1: 7 apples + 6 oranges = 13 fruits
Practice 2: 15 robots – 8 robots = 7 robots
Practice 3: 4 marbles + 5 marbles = 9 marbles
Practice 4: 20 pages – 13 pages = 7 pages
Practice 5: 9 pencils + 7 pens = 16 items
Practice 6: 18 cookies – 9 cookies = 9 cookies
Practice 7: 6 stickers + 8 stickers = 14 stickers
Practice 8: 14 birds – 5 birds = 9 birds
Practice 9: 11 books – 6 books = 5 books
Practice 10: 16 flowers – 7 flowers = 9 flowers
Practice 11: 12 cards – 5 cards = 7 cards
Practice 12: 20 beads – 13 beads = 7 beads