Sure! Let’s solve each problem step by step. We’re adding or subtracting hours and minutes. Remember:
- When
adding, if minutes exceed 60, convert 60 minutes to 1 hour and carry over.
- When
subtracting, if minutes are too small, borrow 1 hour (which is 60 minutes) from the hour column.
---
Problem 1: 13 hr 34 min + 25 hr 25 min
Add minutes: 34 + 25 =
59 min → no carryover
Add hours: 13 + 25 =
38 hr
✔ Answer: 38 hr 59 min
---
Problem 2: 18 hr 43 min – 07 hr 03 min
Subtract minutes: 43 – 3 =
40 min
Subtract hours: 18 – 7 =
11 hr
✔ Answer: 11 hr 40 min
---
Problem 3: 12 hr 04 min + 13 hr 41 min
Add minutes: 4 + 41 =
45 min
Add hours: 12 + 13 =
25 hr
✔ Answer: 25 hr 45 min
---
Problem 4: 19 hr 47 min – 16 hr 41 min
Subtract minutes: 47 – 41 =
6 min
Subtract hours: 19 – 16 =
3 hr
✔ Answer: 3 hr 06 min
---
Problem 5: 04 hr 43 min + 16 hr 36 min
Add minutes: 43 + 36 =
79 min → 79 – 60 =
19 min, carry
1 hr
Add hours: 4 + 16 + 1 (carry) =
21 hr
✔ Answer: 21 hr 19 min
---
Problem 6: 21 hr 30 min – 07 hr 13 min
Subtract minutes: 30 – 13 =
17 min
Subtract hours: 21 – 7 =
14 hr
✔ Answer: 14 hr 17 min
---
Problem 7: 09 hr 57 min + 16 hr 39 min
Add minutes: 57 + 39 =
96 min → 96 – 60 =
36 min, carry
1 hr
Add hours: 9 + 16 + 1 =
26 hr
✔ Answer: 26 hr 36 min
---
Problem 8: 17 hr 46 min – 08 hr 43 min
Subtract minutes: 46 – 43 =
3 min
Subtract hours: 17 – 8 =
9 hr
✔ Answer: 9 hr 03 min
---
Problem 9: 13 hr 58 min + 17 hr 06 min
Add minutes: 58 + 6 =
64 min → 64 – 60 =
4 min, carry
1 hr
Add hours: 13 + 17 + 1 =
31 hr
✔ Answer: 31 hr 04 min
---
Problem 10: 43 hr 44 min – 20 hr 46 min
Subtract minutes: 44 – 46 → can’t do! Borrow 1 hour (60 min)
→ 44 + 60 =
104 min; now 104 – 46 =
58 min
Hours: 43 – 1 (borrowed) = 42; then 42 – 20 =
22 hr
✔ Answer: 22 hr 58 min
---
##
✔ Final Answers:
1.
38 hr 59 min
2.
11 hr 40 min
3.
25 hr 45 min
4.
3 hr 06 min
5.
21 hr 19 min
6.
14 hr 17 min
7.
26 hr 36 min
8.
9 hr 03 min
9.
31 hr 04 min
10.
22 hr 58 min
Let me know if you’d like a printable version or explanation for kids! 😊
Parent Tip: Review the logic above to help your child master the concept of timed subtraction worksheet for.
