题目内容
用你喜欢的方法计算下面各题.
| 0.125×88 | 88-7.5+12-2.5 | 555×9+111×55 | ||||||||||||
|
168.1÷(4.3×2-0.4) |
|
(1)0.125×88,
=0.125×(80+8),
=0.125×80+0.125×8,
=10+1,
=11;
(2)88-7.5+12-2.5,
=(88+12)-(7.5+2.5),
=100-10,
=90;
(3)555×9+111×55,
=(111×5)×9+111×55,
=111×(5×9)+111×55,
=111×(45+55),
=111×100,
=11100;
(4)
-
+
,
=
-
+
,
=
;
(5)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(6)
÷[(
-
)×3],
=
÷[(
-
)×3],
=
÷
,
=
.
=0.125×(80+8),
=0.125×80+0.125×8,
=10+1,
=11;
(2)88-7.5+12-2.5,
=(88+12)-(7.5+2.5),
=100-10,
=90;
(3)555×9+111×55,
=(111×5)×9+111×55,
=111×(5×9)+111×55,
=111×(45+55),
=111×100,
=11100;
(4)
| 7 |
| 8 |
| 5 |
| 6 |
| 7 |
| 12 |
=
| 21 |
| 24 |
| 20 |
| 24 |
| 14 |
| 24 |
=
| 5 |
| 8 |
(5)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(6)
| 3 |
| 8 |
| 5 |
| 6 |
| 2 |
| 3 |
=
| 3 |
| 8 |
| 5 |
| 6 |
| 4 |
| 6 |
=
| 3 |
| 8 |
| 1 |
| 2 |
=
| 3 |
| 4 |
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