Time
Multiplication
minus
addition
Rounding to the nearest 10 or 100
100

When school starts at 6:00.am when school ends 8:00pm how many hrs are they in school for.

14 hrs

100

7x30=

210

100

467-356=




111

100

420+377=

797

100

575 rounds to the nearest 10

580

200

It is 6:30pm how many hrs is it tell midnight


5hr and 19 min

200

3x90=

270

200

673-352=

321

200

597+202=

799

200

3,587 rounds to the nearest 10

3,590

300

It is 12:00 pm How many hrs is it tell 2:30 am

14 hrs and 30 min

300

9x70=

630

300

6,572-3,365=

3,213

300

648+234

879

300

7,555 rounds to the nearest 1,000

8,000

400

3:00 am, how many hrs is it  tell 12:30

9 hrs and 30 min

400

40x20=

800

400

9,893-4,342=

5,551

400

4,304+3,254=

7,558

400

10,687 rounds to the nearest 10

10,690

500

 It is 3:00 pm 5 hrs later what time is it 

8:00

500

367x687=

252,129

500

15,379-12,254=

3,125

500

5,350+7,563=

12,913

500

45,255 rounds to the nearest 100

45,300