题目内容
请选择合理的方法计算,
①7.5×
+1.5×
-
②7
-3.25+2
-5.48
③(26-1.6÷
×
)÷(
-
)
④43×
+136×
+70×
.
①7.5×
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
②7
| 4 |
| 7 |
| 3 |
| 7 |
③(26-1.6÷
| 4 |
| 25 |
| 5 |
| 2 |
| 4 |
| 3 |
| 2 |
| 3 |
④43×
| 136 |
| 137 |
| 59 |
| 137 |
| 68 |
| 137 |
①7.5×
+1.5×
-
,
=(7.5+1.5-1)×
,
=8×
,
=6;
②7
-3.25+2
-5.48,
=7
+2
-(5.48+3.25),
=10-8.73,
=1.27;
③(26-1.6÷
×
)÷(
-
),
=(26-1.6×
×
)÷
,
=(26-25)×
,
=
;
④43×
+136×
+70×
,
=43×
+59×
+35×
,
=(43+59+35)×
,
=137×
,
=136.
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
=(7.5+1.5-1)×
| 3 |
| 4 |
=8×
| 3 |
| 4 |
=6;
②7
| 4 |
| 7 |
| 3 |
| 7 |
=7
| 4 |
| 7 |
| 3 |
| 7 |
=10-8.73,
=1.27;
③(26-1.6÷
| 4 |
| 25 |
| 5 |
| 2 |
| 4 |
| 3 |
| 2 |
| 3 |
=(26-1.6×
| 25 |
| 4 |
| 5 |
| 2 |
| 2 |
| 3 |
=(26-25)×
| 3 |
| 2 |
=
| 3 |
| 2 |
④43×
| 136 |
| 137 |
| 59 |
| 137 |
| 68 |
| 137 |
=43×
| 136 |
| 137 |
| 136 |
| 137 |
| 136 |
| 137 |
=(43+59+35)×
| 136 |
| 137 |
=137×
| 136 |
| 137 |
=136.
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