题目内容
脱式计算.(能简算的要简算)
| ①1150-768÷32 | ②7.5×
| ||||||
③
| ④(1.5-0.6)×(3-1.8) |
①1150-768÷32,
=1150-24,
=1126;
②7.5×
+7.5÷
,
=7.5×
+7.5×
,
=7.5×(
+
),
=7.5×2,
=15;
③
+
+
÷4,
=
+
+
,
=
+(
+
),
=
+
,
=
;
④(1.5-0.6)×(3-1.8),
=0.9×1.2,
=1.08.
=1150-24,
=1126;
②7.5×
| 2 |
| 3 |
| 3 |
| 4 |
=7.5×
| 2 |
| 3 |
| 4 |
| 3 |
=7.5×(
| 2 |
| 3 |
| 4 |
| 3 |
=7.5×2,
=15;
③
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 1 |
| 7 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 1 |
| 7 |
=
| 1 |
| 4 |
| 4 |
| 7 |
=
| 23 |
| 28 |
④(1.5-0.6)×(3-1.8),
=0.9×1.2,
=1.08.
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