题目内容
| 计算下面各题,能简算的要简算. 6.8-1.36-0.64 | (2.5×73)×0.4 |
| ||||||||
0.25+
| 32.5×1.7+32.5×9.3-32.5. |
①6.8-1.36-0.64
=6.8-(1.36+0.64),
=6.8-2,
=4.8;
②(2.5×73)×0.4,
=2.5×0.4×73,
=1×73,
=73;
③
+
-
+
,
=(
-
)+(
+
),
=1
;
④0.25+
+
+
,
=(0.25+0.75)+(
+
),
=1+1,
=2;
⑤32.5×1.7+32.5×9.3-32.5,
=32.5×(1.7+9.3-1),
=32.5×10,
=325.
=6.8-(1.36+0.64),
=6.8-2,
=4.8;
②(2.5×73)×0.4,
=2.5×0.4×73,
=1×73,
=73;
③
| 5 |
| 8 |
| 4 |
| 5 |
| 3 |
| 8 |
| 1 |
| 5 |
=(
| 5 |
| 8 |
| 3 |
| 8 |
| 4 |
| 5 |
| 1 |
| 5 |
=1
| 1 |
| 4 |
④0.25+
| 11 |
| 15 |
| 3 |
| 4 |
| 4 |
| 15 |
=(0.25+0.75)+(
| 11 |
| 15 |
| 4 |
| 15 |
=1+1,
=2;
⑤32.5×1.7+32.5×9.3-32.5,
=32.5×(1.7+9.3-1),
=32.5×10,
=325.
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