(1)1375+360÷90×250
(2)81÷14+17×
| 1 |
| 14 |
(3)
| 3 |
| 5 |
| 1 |
| 7 |
| 8 |
| 21 |
| 2 |
| 3 |
(4)
| 2006 |
| 2007 |
=1375+40×250,
=1375+1000,
=2375;
(2)81÷14+17×
| 1 |
| 14 |
=81×
| 1 |
| 14 |
| 1 |
| 14 |
=(81+17)×
| 1 |
| 14 |
=98×
| 1 |
| 14 |
=7;
(3)
| 3 |
| 5 |
| 1 |
| 7 |
| 8 |
| 21 |
| 2 |
| 3 |
=
| 3 |
| 5 |
| 1 |
| 7 |
| 4 |
| 7 |
=
| 3 |
| 5 |
| 5 |
| 7 |
=
| 3 |
| 7 |
(4)
| 2006 |
| 2007 |
=
| 2006 |
| 2007 |
=
| 2006 |
| 2007 |
| 2006 |
| 2007 |
=2007+
| 2006 |
| 2007 |
=2007
| 2006 |
| 2007 |