题目内容
用你喜欢的方法计算.
| 75+4.2+8.25+5.8 |
| ||||||||||||
| 408+540÷18×24 | 68÷[1÷(0.1-0.09)] | (
|
(1)
×
+1.25×3.3,
=8.375+4.125,
=12.5;
(2)75+4.2+8.25+5.8,
=75+8.25+(4.2+5.8),
=83.25+10,
=93.25;
(3)
-(
+
)÷
,
=
-
×
,
=
-
,
=
;
(4)408+540÷18×24,
=408+540÷18×24,
=408+720,
=1128;
(5)68÷[1÷(0.1-0.09)],
=68÷[1÷0.01],
=68÷100,
=0.68;
(6)(
+
)×90-11,
=
×90+
×90-11,
=6+5-11,
=0.
| 67 |
| 10 |
| 5 |
| 4 |
=8.375+4.125,
=12.5;
(2)75+4.2+8.25+5.8,
=75+8.25+(4.2+5.8),
=83.25+10,
=93.25;
(3)
| 5 |
| 8 |
| 1 |
| 4 |
| 3 |
| 5 |
| 11 |
| 5 |
=
| 5 |
| 8 |
| 17 |
| 20 |
| 5 |
| 11 |
=
| 5 |
| 8 |
| 17 |
| 44 |
=
| 21 |
| 88 |
(4)408+540÷18×24,
=408+540÷18×24,
=408+720,
=1128;
(5)68÷[1÷(0.1-0.09)],
=68÷[1÷0.01],
=68÷100,
=0.68;
(6)(
| 1 |
| 15 |
| 1 |
| 18 |
=
| 1 |
| 15 |
| 1 |
| 18 |
=6+5-11,
=0.
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