题目内容
脱式计算:
3×8.7+8.7×3.7
(
-
+
)×12
×
+
÷
.
3×8.7+8.7×3.7
(
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 4 |
| 7 |
| 4 |
| 5 |
| 8 |
| 1 |
| 4 |
| 8 |
| 5 |
(1)3×8.7+8.7×3.7,
=26.1+32.19,
=58.29;
(2)(
-
+
)×12,
=
×12-
×12+
×12,
=4-2+3,
=5;
(3)
×
+
÷
,
=(
+
)×
,
=
×
,
=1
.
=26.1+32.19,
=58.29;
(2)(
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 4 |
=
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 4 |
=4-2+3,
=5;
(3)
| 7 |
| 4 |
| 5 |
| 8 |
| 1 |
| 4 |
| 8 |
| 5 |
=(
| 7 |
| 4 |
| 1 |
| 4 |
| 5 |
| 8 |
=
| 8 |
| 4 |
| 5 |
| 8 |
=1
| 1 |
| 4 |
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