Explanation:
We need to convert time given in hours and minutes into total minutes.
Remember:
1 hour = 60 minutes.
So, for any time like “X h Y min”, we do:
→ X hours = X × 60 minutes
→ Then add the extra Y minutes.
Let’s solve each part step by step:
(a) 1 h 20 min
→ 1 h = 60 min
→ So: 60 min + 20 min =
80 min
Fill in:
1 h 20 min =
60 min + 20 min =
80 min
(b) 2 h 48 min
→ 2 h = 2 × 60 = 120 min
→ So: 120 min + 48 min =
168 min
Fill in:
2 h 48 min = 120 min +
48 min =
168 min
(c) 1 h 40 min
→ 1 h = 60 min
→ So: 60 min + 40 min =
100 min
Fill in:
1 h 40 min =
60 min +
40 min =
100 min
(d) 2 h 25 min
→ 2 h = 120 min
→ 120 + 25 =
145 min
(e) 3 h 33 min
→ 3 h = 3 × 60 = 180 min
→ 180 + 33 =
213 min
(f) 4 h 5 min
→ 4 h = 240 min
→ 240 + 5 =
245 min
(g) 5 h 50 min
→ 5 h = 300 min
→ 300 + 50 =
350 min
(h) 3 h 16 min
→ 3 h = 180 min
→ 180 + 16 =
196 min
(i) 6 h 30 min
→ 6 h = 360 min
→ 360 + 30 =
390 min
(j) 5 h 9 min
→ 5 h = 300 min
→ 300 + 9 =
309 min
Let me double-check a few to be safe:
- (e) 3×60=180, +33 = 213
✔
- (g) 5×60=300, +50 = 350
✔
- (j) 5×60=300, +9 = 309
✔
All correct.
Final Answer:
(a) 60, 80
(b) 48, 168
(c) 60, 40, 100
(d) 145
(e) 213
(f) 245
(g) 350
(h) 196
(i) 390
(j) 309
Parent Tip: Review the logic above to help your child master the concept of time conversion worksheet 5th grade.
