①14.8-44.08÷5.8
②7.5×
| 2 |
| 3 |
| 3 |
| 4 |
③
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
④3.35×6.4×2+6.7×3.6.①14.8-44.08÷5.8,
=14.8-7.6,
=7.2;
②7.5×
| 2 |
| 3 |
| 3 |
| 4 |
=7.5×
| 2 |
| 3 |
| 4 |
| 3 |
=7.5×(
| 2 |
| 3 |
| 4 |
| 3 |
=7.5×2,
=15;
③
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
| 1 |
| 4 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 1 |
| 7 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 1 |
| 7 |
=
| 1 |
| 4 |
| 4 |
| 7 |
=
| 23 |
| 28 |
④3.35×6.4×2+6.7×3.6,
=(3.35×2)×6.4+6.7×3.6,
=6.7×6.4+6.7×3.6,
=6.7×(6.4+3.6),
=6.7×10,
=67.