脱式计算，能简算的要简算．①(13+112-16)×24②45×23+15÷34③27×89+57×89④(9.5+35)-(2.8-25)⑤[12-(34-35)]÷710⑥（57+58）×25．-六年级数学
+
÷
=
+
×
，
=
+
，
=
；
③
×
+
×
=（
+
）×
，
=1×
，
=
；
④(9.5+
)-(2.8-
)
=（9.5+0.6）-（2.8-0.4），
=10.1-2.4，
=7.7；
⑤[
-(
-
)]÷
=[
-（
-
）]×
，
=[
-
]×
，
=
| 1 |
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| 3 |
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=
| 8 |
| 15 |
| 1 |
| 5 |
| 4 |
| 3 |
=
| 8 |
| 15 |
| 4 |
| 15 |
=
| 4 |
| 5 |
③
| 2 |
| 7 |
| 8 |
| 9 |
| 5 |
| 7 |
| 8 |
| 9 |
=（
| 2 |
| 7 |
| 5 |
| 7 |
| 8 |
| 9 |
=1×
| 8 |
| 9 |
=
| 8 |
| 9 |
④(9.5+
| 3 |
| 5 |
| 2 |
| 5 |
=（9.5+0.6）-（2.8-0.4），
=10.1-2.4，
=7.7；
⑤[
| 1 |
| 2 |
| 3 |
| 4 |
| 3 |
| 5 |
| 7 |
| 10 |
=[
| 1 |
| 2 |
| 15 |
| 20 |
| 12 |
| 20 |
| 10 |
| 7 |
=[
| 10 |
| 20 |
| 3 |
| 20 |
| 10 |
| 7 |
=
