triple addition
triple add carry
triple subtract
triple subtract borrow
telling time
100

789 + 110 =

899

100

669 + 256 =

925

100

789 - 123

666

100

886 - 169 =

717

100

what is the 1 on the clock

5

200

152 + 146 =

298

200

659 + 369 =

1028

200

628 - 526 =

102

200

253 - 196 =

57

200

what is the large hand on the clock stand for

the minutes on the clock

300

562 + 233 =

795

300

518 + 699 =

1217

300

286 - 100 =

186

300

426 - 153 =

273

300

what does the small hand stand for on the clock

hour on the clock

400

900 + 156 =

1056

400

388 + 847 =

1235

400

385 - 172 =

213

400

786 - 269 =

517

400

what is the 6 on the clock

30

500

625 + 231 =

856

500

963 + 369 =

1332

500

584 - 251 =

333

500

888 - 259 =

629

500

how many minutes in 1 hour

60