Subtraction and Counting Back
Practice subtraction using the counting back strategy and number lines for grade 3 students.
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Subtraction and Counting Back
Name:
Date:
Score:
Read each question carefully and use the counting back strategy or the number line to find the answer. Show your work where indicated.
Directions: Count back to find the difference.
1. 15 - 3 = (Count back 3 from 15)
2. 20 - 5 = (Count back 5 from 20)
3. 32 - 4 = (Count back 4 from 32)
Directions: Use the number line to solve each subtraction problem. Draw jumps on the number line.
4. 12 - 4 = ?
Answer:
5. 18 - 6 = ?
Answer:
6. Which subtraction problem can be solved by counting back 7 from 25?
25 - 5
25 - 7
7 - 25
25 + 7
7. If you count back 8 from 40, what number do you land on?
30
32
48
35
Directions: Solve the following word problems.
8. Sarah had 17 stickers. She gave 5 stickers to her friend. How many stickers does Sarah have left? Use counting back to solve.
9. A bus had 23 passengers. At the next stop, 4 passengers got off. How many passengers are left on the bus? Show your work using a number line or counting back.
10. Counting back always makes numbers smaller.
True
False