题目内容
计算下列各题：
| ①17.09-3.63-6.37+0.91 | ②10÷〔
| ||||||||||
③198÷
| ④
|
①17.09-3.63-6.37+0.91，
=（17.09+0.91）-（3.63+6.37），
=18-10，
=8；
②10÷[
-（
÷
+
）]
=10÷[
-（
×
+
）]
=10÷[
-
]
=10÷[
-
]
=10÷
=10×
=37.5；
③198÷
+202×
，
=198×
+202×
，
=
×（198+202），
=300；
④
×[1÷（
-
）]
=
×[1÷
]
=
×
=2.5；
=（17.09+0.91）-（3.63+6.37），
=18-10，
=8；
②10÷[
| 8 |
| 3 |
| 5 |
| 13 |
| 5 |
| 26 |
| 2 |
| 5 |
=10÷[
| 8 |
| 3 |
| 5 |
| 13 |
| 26 |
| 5 |
| 2 |
| 5 |
=10÷[
| 8 |
| 3 |
| 12 |
| 5 |
=10÷[
| 40 |
| 15 |
| 36 |
| 15 |
=10÷
| 4 |
| 15 |
=10×
| 15 |
| 4 |
=37.5；
③198÷
| 4 |
| 3 |
| 3 |
| 4 |
=198×
| 3 |
| 4 |
| 3 |
| 4 |
=
| 3 |
| 4 |
=300；
④
| 7 |
| 8 |
| 7 |
| 10 |
| 7 |
| 20 |
=
| 7 |
| 8 |
| 7 |
| 20 |
=
| 7 |
| 8 |
| 20 |
| 7 |
=2.5；
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