Add and Subtract Time Worksheets - Free Printable

Let’s solve each part step by step. We’ll be careful with adding and subtracting minutes, especially when we cross over an hour (like going from 59 minutes to 00 minutes).

---

Section 1: Add on the minutes

a) 3:20pm + 30 mins
→ 20 + 30 = 50 → so it’s 3:50pm

b) 6:45pm + 15 mins
→ 45 + 15 = 60 → that’s exactly 1 hour → so 6:45 + 15 mins = 7:00pm

c) 8:15am + 25 mins
→ 15 + 25 = 40 → so it’s 8:40am

d) 2:50pm + 40 mins
→ 50 + 40 = 90 → 90 mins = 1 hour 30 mins → so add 1 hour to 2pm → 3pm, then add 30 mins → 3:30pm

e) 11:35am + 50 mins
→ 35 + 50 = 85 → 85 mins = 1 hour 25 mins → 11am + 1 hour = 12pm, then +25 mins → 12:25pm

f) 7:40am + 35 mins
→ 40 + 35 = 75 → 75 mins = 1 hour 15 mins → 7am + 1 hour = 8am, then +15 mins → 8:15am

---

Section 2: Subtract the minutes

a) 10:40am – 20 mins
→ 40 – 20 = 20 → so 10:20am

b) 2:50pm – 15 mins
→ 50 – 15 = 35 → so 2:35pm

c) 10:20pm – 30 mins
→ 20 – 30 = can’t do! So borrow 1 hour → 10:20 becomes 9:80 (because 1 hour = 60 mins, so 20 + 60 = 80)
→ 80 – 30 = 50 → so 9:50pm

d) 9:10am – 25 mins
→ 10 – 25 = can’t do → borrow 1 hour → 9:10 becomes 8:70
→ 70 – 25 = 45 → so 8:45am

e) 12:15pm – 40 mins
→ 15 – 40 = can’t do → borrow 1 hour → 12:15 becomes 11:75
→ 75 – 40 = 35 → so 11:35am

f) 1:35pm – 50 mins
→ 35 – 50 = can’t do → borrow 1 hour → 1:35 becomes 12:95
→ 95 – 50 = 45 → so 12:45pm

---

Section 3: Time intervals

We find how many minutes between two times.

First example given: 3:25pm to 3:45pm → 45 - 25 = 20 minutes ✔️

Now:

- 4:30pm to 5:10pm
→ From 4:30 to 5:00 is 30 mins, then 5:00 to 5:10 is 10 mins → total = 30 + 10 = 40 minutes

- 10:25am to 11:00am
→ 60 - 25 = 35 → because 11:00 is same as 10:60 → 60 - 25 = 35 minutes

- 12:50pm to 1:15pm
→ From 12:50 to 1:00 is 10 mins, then 1:00 to 1:15 is 15 mins → total = 10 + 15 = 25 minutes

- 7:25pm to 8:05pm
→ From 7:25 to 8:00 is 35 mins, then 8:00 to 8:05 is 5 mins → total = 35 + 5 = 40 minutes

---

Section 4: Missing time

a) 25 minutes earlier than 9:40am
→ 40 - 25 = 15 → so 9:15am

b) 30 minutes later than 7:35pm
→ 35 + 30 = 65 → 65 mins = 1 hour 5 mins → 7pm + 1 hour = 8pm, +5 mins → 8:05pm

c) 15 minutes later than 11:40am
→ 40 + 15 = 55 → so 11:55am

d) 25 minutes earlier than 1:10pm
→ 10 - 25 = can’t do → borrow 1 hour → 1:10 becomes 12:70
→ 70 - 25 = 45 → so 12:45pm

e) 50 minutes earlier than 10:25am
→ 25 - 50 = can’t do → borrow 1 hour → 10:25 becomes 9:85
→ 85 - 50 = 35 → so 9:35am

---

Final Answer:

Section 1:
a) 3:50pm
b) 7:00pm
c) 8:40am
d) 3:30pm
e) 12:25pm
f) 8:15am

Section 2:
a) 10:20am
b) 2:35pm
c) 9:50pm
d) 8:45am
e) 11:35am
f) 12:45pm

Section 3:
4:30pm to 5:10pm → 40 minutes
10:25am to 11:00am → 35 minutes
12:50pm to 1:15pm → 25 minutes
7:25pm to 8:05pm → 40 minutes

Section 4:
a) 9:15am
b) 8:05pm
c) 11:55am
d) 12:45pm
e) 9:35am