题目内容
怎样简便就怎样计算.
| 91-10÷0.25÷4 | ||||||||||||
| 35÷[
| ||||||||||||
| 41×101 | 5×
| ||||||||||||
| 8.5-(5.6+4.8)÷1.3 | 12×(
|
(1)
| 11 |
| 9 |
| 2 |
| 9 |
| 7 |
| 13 |
=
| 11 |
| 9 |
| 2 |
| 9 |
| 7 |
| 13 |
=1-
| 7 |
| 13 |
=
| 6 |
| 13 |
(2)91-10÷0.25÷4,
=91-10÷(0.25×4),
=91-10÷1,
=91-10,
=81;
(3)
| 5 |
| 7 |
| 9 |
| 11 |
| 2 |
| 11 |
| 7 |
| 5 |
=
| 5 |
| 7 |
| 9 |
| 11 |
| 2 |
| 11 |
| 5 |
| 7 |
=(
| 9 |
| 11 |
| 2 |
| 11 |
| 5 |
| 7 |
=1×
| 5 |
| 7 |
=
| 5 |
| 7 |
(4)35÷[
| 7 |
| 8 |
| 2 |
| 7 |
=35÷[
| 7 |
| 8 |
| 5 |
| 7 |
=35÷
| 5 |
| 8 |
=56;
(5)41×101,
=41×(100+1),
=41×100+41,
=4100+41,
=4141;
(6)5×
| 1 |
| 3 |
| 2 |
| 5 |
| 3 |
| 10 |
=(5×
| 2 |
| 5 |
| 1 |
| 3 |
| 3 |
| 10 |
=2×
| 1 |
| 10 |
=
| 1 |
| 5 |
(7)8.5-(5.6+4.8)÷1.3,
=8.5-10.4÷1.3,
=8.5-8,
=0.5;
(8)12×(
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 6 |
=12×
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 6 |
=3-4+2,
=1.
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