Let's solve each subtraction problem using the
number line method shown in the image. The "frog" represents a jump on the number line to help visualize subtraction by counting up from the smaller number to the larger one.
---
1. 64 - 47 = ?
- Start at
47, and jump to
64.
- First, jump from
47 to 50: that’s
3 steps.
- Then, jump from
50 to 60: that’s
10 steps.
- Then, jump from
60 to 64: that’s
4 steps.
- Total: 3 + 10 + 4 =
17
✔ Answer: 17
---
2. 53 - 38 = ?
- Start at
38, jump to
53.
- Jump from
38 to 40:
2 steps.
- Jump from
40 to 50:
10 steps.
- Jump from
50 to 53:
3 steps.
- Total: 2 + 10 + 3 =
15
✔ Answer: 15
---
3. 85 - 59 = ?
- Start at
59, jump to
85.
- Jump from
59 to 60:
1 step.
- Jump from
60 to 80:
20 steps.
- Jump from
80 to 85:
5 steps.
- Total: 1 + 20 + 5 =
26
✔ Answer: 26
---
4. 72 - 45 = ?
- Start at
45, jump to
72.
- Jump from
45 to 50:
5 steps.
- Jump from
50 to 70:
20 steps.
- Jump from
70 to 72:
2 steps.
- Total: 5 + 20 + 2 =
27
✔ Answer: 27
---
5. 91 - 56 = ?
- Start at
56, jump to
91.
- Jump from
56 to 60:
4 steps.
- Jump from
60 to 90:
30 steps.
- Jump from
90 to 91:
1 step.
- Total: 4 + 30 + 1 =
35
✔ Answer: 35
---
✔ Final Answers:
1. 64 - 47 =
17
2. 53 - 38 =
15
3. 85 - 59 =
26
4. 72 - 45 =
27
5. 91 - 56 =
35
This method uses
counting up (or "frog jumps") on the number line to make subtraction easier, especially for mental math. It's great for visual learners! 🐸
Parent Tip: Review the logic above to help your child master the concept of frog subtraction worksheet.
