| 1.25×32×2.5 |
| 7.38-(1.57+2.38) | ||||||||||
|
| 9315÷23+77. |
=1.25×8×4×2.5,
=10×10,
=100,
(2)
| 3 |
| 4 |
| 1 |
| 4 |
| 4 |
| 7 |
=
| 3 |
| 4 |
| 1 |
| 7 |
=
| 25 |
| 28 |
(3)7.38-(1.57+2.38),
=7.38-1.57-2.38,
=7.38-2.38-1.57,
=5-1.57,
=3.43;
(4)
| 9 |
| 10 |
| 9 |
| 10 |
=
| 9 |
| 10 |
=
| 9 |
| 10 |
=90;
(5)
| 1 |
| 6 |
| 3 |
| 5 |
| 3 |
| 10 |
=
| 1 |
| 6 |
| 3 |
| 10 |
=
| 1 |
| 6 |
| 10 |
| 3 |
=
| 1 |
| 20 |
(6)9315÷23+77,
=405+77,
=482.