怎样算简便就怎样算．6÷310-310÷613×34÷（34-512）12×3.2+5.6×0.5+1.2×50%[53-（25+34）]÷31499×9798．11.58-（7511+1.58）-数学
| 3 |
| 4 |
| 5 |
| 12 |
=
| 1 |
| 4 |
| 1 |
| 3 |
=
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③
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| 2 |
=0.5×3.2+5.6×0.5+1.2×0.5，
=（3.2+5.6+1.2）×0.5，
=10×0.5，
=5；
④[
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| 3 |
| 2 |
| 5 |
| 3 |
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| 31 |
| 4 |
=[
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| 3 |
| 23 |
| 20 |
| 31 |
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=
| 31 |
| 60 |
| 4 |
| 31 |
=
| 1 |
| 15 |
⑤99×
| 97 |
| 98 |
=（98+1）×
| 97 |
| 98 |
=98×
| 97 |
| 98 |
| 97 |
| 98 |
=97+
| 97 |
| 98 |
=97
| 97 |
| 98 |
⑥11.58-（7
| 5 |
| 11 |
=11.58-7
