题目内容
计算(能简算的要写出简算过程)
①7968-2968÷28×27
②5.47-3
+3.63-2
③(8.8-23.4×
)÷
④0.3×1
+6
×
⑤12.5×2.5×12×
⑥[1.6-(
-
)×
]÷
.
①7968-2968÷28×27
②5.47-3
| 5 |
| 9 |
| 4 |
| 9 |
③(8.8-23.4×
| 1 |
| 3 |
| 5 |
| 9 |
④0.3×1
| 4 |
| 9 |
| 5 |
| 9 |
| 3 |
| 10 |
⑤12.5×2.5×12×
| 8 |
| 3 |
⑥[1.6-(
| 6 |
| 5 |
| 4 |
| 15 |
| 3 |
| 7 |
| 2 |
| 3 |
①7968-2968÷28×27,
=7968-106×27,
=7968-2862,
=5106;
②5.47-3
| 5 |
| 9 |
| 4 |
| 9 |
=(5.47+3.63)-(3
| 5 |
| 9 |
| 4 |
| 9 |
=9-6,
=3;
③(8.8-23.4×
| 1 |
| 3 |
| 5 |
| 9 |
=(8.8-7.8)÷
| 5 |
| 9 |
=1÷
| 5 |
| 9 |
=
| 9 |
| 5 |
④0.3×1
| 4 |
| 9 |
| 5 |
| 9 |
| 3 |
| 10 |
=0.3×1
| 4 |
| 9 |
| 5 |
| 9 |
=0.3×(1
| 4 |
| 9 |
| 5 |
| 9 |
=0.3×8,
=2.4;
⑤12.5×2.5×12×
| 8 |
| 3 |
=12.5×2.5×(4×8),
=(12.5×8)×(2.5×4),
=100×10,
=1000;
⑥[1.6-(
| 6 |
| 5 |
| 4 |
| 15 |
| 3 |
| 7 |
| 2 |
| 3 |
=[1.6-
| 14 |
| 15 |
| 3 |
| 7 |
| 2 |
| 3 |
=[1.6-0.4]÷
| 2 |
| 3 |
=1.2÷
| 2 |
| 3 |
=1.8.
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