Show:
2 by 2 digit
adding
time
40

562x5

2810


40

9000+10000

19000

100

1000 X 10

100000

100

100000+100000


200000



100

if  go to work at 2:00 pm and came at  5:59 pm how hour  did he spent

3 hour  and 59 min 

200

7 x 8

56

200

2000+2222

4222

200

2:00 pm to 8pm 

4hours

300

100 x 100

10000

300

2222+2222


4444


500

1111 X1111

12345431

500

1111+1111

2222