Show:
Rounding
Subtraction
High or low
100

Round 421 to the nearest 100

400

100

   649

-  452

------------

197

100

423-91

423-100=323

Low

200

Round 914 to the nearest 10 

910

200

    1225

-    110

------------

1,115

300

Round 545 to the nearest 50

550

300

  544

- 239

---------

305

400

Round 465 to the nearest 25

475

400

  644

- 599

----------

45

500

 1,464 Round to the nearest 25

1,475

500

   1431

-   692

------------

739