3
| 1 |
| 6 |
| 1 |
| 3 |
| 3 |
| 4 |
(
| 1 |
| 15 |
| 2 |
| 17 |
(9.6-10
| 1 |
| 2 |
| 1 |
| 3 |
5.66×7.28-3.16×3.16-3.16×4.12
2012×0.875+201.2×1.25
| 1 |
| 1×2 |
| 1 |
| 2×3 |
| 1 |
| 3×4 |
| 1 |
| 99×100 |
| 1 |
| 6 |
| 1 |
| 3 |
| 3 |
| 4 |
=3
| 1 |
| 6 |
| 1 |
| 3 |
| 7 |
| 4 |
=3
| 1 |
| 6 |
| 7 |
| 12 |
=
| 19 |
| 6 |
| 19 |
| 12 |
=
| 19 |
| 6 |
| 12 |
| 19 |
=2;
(2)(
| 1 |
| 15 |
| 2 |
| 17 |
=
| 1 |
| 15 |
| 2 |
| 17 |
=17+30,
=47;
(3)(9.6-10
| 1 |
| 2 |
| 1 |
| 3 |
=(9.6-
| 21 |
| 2 |
| 5 |
| 4 |
| 4 |
| 3 |
| 3 |
| 4 |
=(9.6-
| 21 |
| 2 |
| 4 |
| 5 |
=(9.6-8.4)÷1,
=1.2;
(4)5.66×7.28-3.16×3.16-3.16×4.12,
=5.66×7.28-3.16×(3.16+4.12),
=5.66×7.28-3.16×7.28,
=(5.66-3.16)×7.28,
=2.5×7.28,
=18.2;
(5)2012×0.875+201.2×1.25,
=2012×0.875+2012×0.125,
=2012×(0.875+0.125),
=2012×1,
=2012;
(6)
| 1 |
| 1×2 |
| 1 |
| 2×3 |
| 1 |
| 3×4 |
| 1 |
| 99×100 |
=1-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 99 |
| 1 |
| 100 |
=1-
| 1 |
| 100 |
=
| 99 |
| 100 |