题目内容
| 0.25×0.07×8 |
| ||||||
1÷[(
| 6.8×10.7-0.7×6.8. |
(1)0.25×0.07×8
=0.25×8×0.07
=2×0.07
=0.14;
(2)
×(
-
)
=
×
-
×
=1-
=
;
(3)1÷[(
+
)÷4]
=1÷[
÷4]
=1÷
=8;
(4)6.8×10.7-0.7×6.8
=6.8×(10.7-0.7)
=6.8×10
=68.
=0.25×8×0.07
=2×0.07
=0.14;
(2)
| 3 |
| 4 |
| 4 |
| 3 |
| 8 |
| 9 |
=
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 4 |
| 8 |
| 9 |
=1-
| 2 |
| 3 |
=
| 1 |
| 3 |
(3)1÷[(
| 1 |
| 6 |
| 1 |
| 3 |
=1÷[
| 1 |
| 2 |
=1÷
| 1 |
| 8 |
=8;
(4)6.8×10.7-0.7×6.8
=6.8×(10.7-0.7)
=6.8×10
=68.
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