题目内容
| 脱式计算,能简算要简算 33.5-5.3-4.7+16.5 |
9900÷25÷4 | 1÷(
| ||||||||||||||
24×(
|
1+0.45÷0.9-
|
|
(1)33.5-5.3-4.7+16.5,
=(33.5+16.5)-(5.3+4.7),
=50-10,
=40;
(2)9900÷25÷4,
=9900÷(25×4),
=9900÷100,
=99;
(3)1÷(
| 3 |
| 5 |
| 3 |
| 10 |
=1÷
| 9 |
| 10 |
=
| 10 |
| 9 |
(4)24×(
| 2 |
| 3 |
| 1 |
| 6 |
| 3 |
| 8 |
=24×
| 2 |
| 3 |
| 1 |
| 6 |
| 3 |
| 8 |
=16+4-9,
=20-9,
=11;
(5)1+0.45÷0.9-
| 7 |
| 8 |
=1+0.5-
| 7 |
| 8 |
=1.5-
| 7 |
| 8 |
=0.625;
(6)
| 20 |
| 17 |
| 3 |
| 17 |
| 2 |
| 3 |
=
| 20 |
| 17 |
| 3 |
| 17 |
| 2 |
| 3 |
=1-
| 2 |
| 3 |
=
| 1 |
| 3 |
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