题目内容
脱式计算
（1）0.36+0.63×2.8-1
（2）1.5×5
-
+0.35
（3）1
×[0.625+（4
-2
）÷（1.83+
）]
（4）7
÷
-（
+2
）×2
．
（1）0.36+0.63×2.8-1
| 1 |
| 3 |
（2）1.5×5
| 1 |
| 3 |
| 3 |
| 4 |
（3）1
| 5 |
| 52 |
| 1 |
| 6 |
| 4 |
| 15 |
| 9 |
| 20 |
（4）7
| 12 |
| 5 |
| 18 |
| 25 |
| 7 |
| 12 |
| 5 |
| 8 |
| 5 |
| 14 |
（1）0.36+0.63×2.8-1
，
=0.36+1.764-1
，
=2.124-1
，
=
；
（2）1.5×5
-
+0.35，
=8-
+0.35，
=7.25+0.35，
=7.6；
（3）1
×[0.625+（4
-2
）÷（1.83+
）]，
=1
×[0.625+1.9÷2.28]，
=1
×[0.625+
]，
=
×
+
×
，
=
+1，
=1
；
（4）7
÷
-（
+2
）×2
，
=7
÷
-（
×
+
×
），
=7
÷
-（
+
），
=7
÷
-
，
=
-
，
=
．
| 1 |
| 3 |
=0.36+1.764-1
| 1 |
| 3 |
=2.124-1
| 1 |
| 3 |
=
| 593 |
| 750 |
（2）1.5×5
| 1 |
| 3 |
| 3 |
| 4 |
=8-
| 3 |
| 4 |
=7.25+0.35，
=7.6；
（3）1
| 5 |
| 52 |
| 1 |
| 6 |
| 4 |
| 15 |
| 9 |
| 20 |
=1
| 5 |
| 52 |
=1
| 1 |
| 5 |
| 5 |
| 6 |
=
| 6 |
| 5 |
| 5 |
| 8 |
| 6 |
| 5 |
| 5 |
| 6 |
=
| 3 |
| 4 |
=1
| 3 |
| 4 |
（4）7
| 12 |
| 5 |
| 18 |
| 25 |
| 7 |
| 12 |
| 5 |
| 8 |
| 5 |
| 14 |
=7
| 12 |
| 5 |
| 18 |
| 25 |
| 7 |
| 12 |
| 33 |
| 14 |
| 21 |
| 8 |
| 33 |
| 14 |
=7
| 12 |
| 5 |
| 18 |
| 25 |
| 11 |
| 8 |
| 99 |
| 16 |
=7
| 12 |
| 5 |
| 18 |
| 25 |
| 121 |
| 16 |
=
| 235 |
| 18 |
| 121 |
| 16 |
=
| 791 |
| 144 |
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