题目内容
计算下面各题，能简算的要简算：
7.54+
+2.46+
0.4÷
+
×
÷(
-
×
)
99×
+
．
7.54+
| 12 |
| 7 |
| 16 |
| 7 |
0.4÷
| 15 |
| 4 |
| 2 |
| 5 |
| 4 |
| 15 |
| 3 |
| 23 |
| 6 |
| 7 |
| 5 |
| 6 |
| 3 |
| 10 |
99×
| 23 |
| 25 |
| 23 |
| 25 |
7.54+
+2.46+
，
=（7.54+2.46）+（
+
），
=10+4，
=14；
0.4÷
+
×
，
=
×
+
×
，
=
×（
+
），
=
×
，
=
；
÷(
-
×
)，
=
÷（
-
），
=
÷
，
=
；
99×
+
，
=（99+1）×
，
=100×
，
=92．
| 12 |
| 7 |
| 16 |
| 7 |
=（7.54+2.46）+（
| 12 |
| 7 |
| 16 |
| 7 |
=10+4，
=14；
0.4÷
| 15 |
| 4 |
| 2 |
| 5 |
| 4 |
| 15 |
=
| 2 |
| 5 |
| 4 |
| 15 |
| 2 |
| 5 |
| 4 |
| 15 |
=
| 2 |
| 5 |
| 4 |
| 15 |
| 4 |
| 15 |
=
| 2 |
| 5 |
| 8 |
| 15 |
=
| 16 |
| 75 |
| 3 |
| 23 |
| 6 |
| 7 |
| 5 |
| 6 |
| 3 |
| 10 |
=
| 3 |
| 23 |
| 6 |
| 7 |
| 1 |
| 4 |
=
| 3 |
| 23 |
| 17 |
| 28 |
=
| 84 |
| 391 |
99×
| 23 |
| 25 |
| 23 |
| 25 |
=（99+1）×
| 23 |
| 25 |
=100×
| 23 |
| 25 |
=92．
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