24 to 12
12 to 24
Problem Solving Challenge!
100

1800

6pm

100

9am

0900

100

Tom watched the football game for 2 hours. If the game started at 2125, at what time did the game end?

2325 or 11:25pm

200

1000

10am

200

5pm

1700

200

Sam took 22 min to finish his homework. If he finished his homework at 1844, at what time did he start his homework?

1822 or 6.22pm

300

2330

11.30pm

300

8:30pm

2030

300

Linda took 32 min to bake some cookies. If she started at 1259, at what time did she finish?

1331 or 1.31pm

400

0045

12.45am

400

7:15am

0715

400

Ming took 4 h 25 min to prepare for a test. If he started at 1320, at what time did he finish?

1745 or 5.45pm

500
1413

2.13pm

500

9:57

2157

500

Mohammed spent 2 h 40 min swimming and then had a 30-minute afternoon break. If he started swimming at 1325, at what time did he finish the break?

1635 or 4.35pm