题目内容
计算下面各题,能简算的要简算
17.8-8.75+2.2-1.25
0.125×32×2.5
+
+
+
+(
-
)
17.8-8.75+2.2-1.25
0.125×32×2.5
| 4 |
| 7 |
| 7 |
| 8 |
| 3 |
| 7 |
| 1 |
| 8 |
| 4 |
| 7 |
| 17 |
| 24 |
| 4 |
| 7 |
①17.8-8.75+2.2-1.25,
=(17.8+2.2)-(8.75+1.25),
=20-10,
=10;
②0.125×32×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10;
③
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
④
+(
-
),
=
-
+
,
=
.
=(17.8+2.2)-(8.75+1.25),
=20-10,
=10;
②0.125×32×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10;
③
| 4 |
| 7 |
| 7 |
| 8 |
| 3 |
| 7 |
| 1 |
| 8 |
=(
| 4 |
| 7 |
| 3 |
| 7 |
| 7 |
| 8 |
| 1 |
| 8 |
=1+1,
=2;
④
| 4 |
| 7 |
| 17 |
| 24 |
| 4 |
| 7 |
=
| 4 |
| 7 |
| 4 |
| 7 |
| 17 |
| 24 |
=
| 17 |
| 24 |
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