脱式计算，能用简便算法的要用简便算法．5.4×910+3.6÷109+0.978×3796-314+3459×[3
脱式计算，能用简便算法的要用简便算法．5.4×910+3.6÷109+0.978×3796-314+3459×[34-（716-14）][47-（18.875-1÷815...
脱式计算，能用简便算法的要用简便算法．5.4×910+3.6÷109+0.978×3796-314+3459×[34-（716-14）][47-（18.875-1÷815）]÷0.46×4625．
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①5.4×
+3.6÷
+0.9
=5.4×0.9+3.6×0.9+0.9×1
=0.9×（5.4+3.6+1）
=0.9×10
=9；
②78×
=（79-1）×
=79×
?
×1
=3-
=2
；
③6-3
+
=3+3+
-3
=3+[（3+
）-3
]
=3；
④
×[
-（
-
）]
=
×[（
+
）-
]
=
×
=
；
⑤[47-（18.875-1÷
）]÷0.46×
=[47-（18.875-1.875）]×
×
=[47-（18.875-1.875）]×4
=[47-17]×4
=30×4
=120．
| 9 |
| 10 |
| 10 |
| 9 |
=5.4×0.9+3.6×0.9+0.9×1
=0.9×（5.4+3.6+1）
=0.9×10
=9；
②78×
| 3 |
| 79 |
=（79-1）×
| 3 |
| 79 |
=79×
| 3 |
| 79 |
| 3 |
| 79 |
=3-
| 3 |
| 79 |
=2
| 76 |
| 79 |
③6-3
| 1 |
| 4 |
| 3 |
| 4 |
=3+3+
| 3 |
| 4 |
| 3 |
| 4 |
=3+[（3+
| 3 |
| 4 |
| 3 |
| 4 |
=3；
④
| 5 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 1 |
| 4 |
=
| 5 |
| 9 |
| 3 |
| 4 |
| 1 |
| 4 |
| 7 |
| 16 |
=
| 5 |
| 9 |
| 9 |
| 16 |
=
| 5 |
| 16 |
⑤[47-（18.875-1÷
| 8 |
| 15 |
| 46 |
| 25 |
=[47-（18.875-1.875）]×
| 100 |
| 46 |
| 46 |
| 25 |
=[47-（18.875-1.875）]×4
=[47-17]×4
=30×4
=120．
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