Elapsed Time — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. In Grade 3, Mia did homework 3:15 to 4:05 and soccer 4:30 to 5:45. Total?
A) 2 h 5 min
B) 2 h 15 min
C) 1 h 55 min
D) 2 h 25 min
Homework is 50 min and soccer is 1 h 15 min, totaling 2 h 5 min.
2. In Grade 3, Leo read 2:10 to 2:50 and played 3:05 to 4:20. Total?
A) 1 h 55 min
B) 2 h 5 min
C) 2 h 15 min
D) 1 h 45 min
Reading is 40 min and play is 1 h 15 min, so 1 h 55 min total.
3. In Grade 3, Ava painted 9:25 to 10:10 and sang 10:30 to 11:15. Total?
A) 1 h 30 min
B) 1 h 20 min
C) 1 h 45 min
D) 1 h 50 min
Painting is 45 min and singing is 45 min, totaling 1 h 30 min.
4. In Grade 3, Ben studied 4:05 to 4:55 and biked 5:10 to 6:00. Total?
A) 1 h 40 min
B) 1 h 50 min
C) 1 h 30 min
D) 2 h 10 min
Studying is 50 min and biking is 50 min, giving 1 h 40 min.
Part B: Fill in the Blank
Write the correct answer on each line.
1. In Grade 3, activities of 45 min and 1 h 20 min total 2 h 5 min.
45 + 80 = 125 min, which equals 2 hours and 5 minutes.
2. In Grade 3, chores 8:10 to 8:55 and reading 9:15 to 9:50 total 80 min.
Chores is 45 min and reading is 35 min, totaling 80 minutes.
3. In Grade 3, two events of 1 h 25 min and 55 min combine to 2 h 20 min.
1 h 25 min plus 55 min is 2 h 20 min total active time.
4. In Grade 3, 35 min plus 1 h 40 min plus 25 min equals 2 h 40 min.
35 + 100 + 25 = 160 min, which equals 2 hours 40 min.
5. In Grade 3, music 10:20 to 11:05 and math 11:20 to 12:10 total 95 min.
Music is 45 min and math is 50 min, summing to 95 minutes.