题目内容
| 脱式计算. (2.8+4.6)×(2.6-2.) | 0.25×(32+64)÷0.6 | ||||||||||||||
|
|
①(2.8+4.6)×(2.6-2),
=7.4×0.6,
=4.44;
②0.25×(32+64)÷0.6,
=0.25×96÷0.6,
=0.25×4×24÷0.6,
=24÷0.6,
=40;
③
÷[
×(
-
)],
=
÷[
×(
-
)],
=
÷
,
=
×
,
=2;
④
×[1-(
-
)],
=
×[1-(
-
)],
=
×[1-
],
=
×
,
=
.
=7.4×0.6,
=4.44;
②0.25×(32+64)÷0.6,
=0.25×96÷0.6,
=0.25×4×24÷0.6,
=24÷0.6,
=40;
③
| 9 |
| 10 |
| 1 |
| 2 |
| 6 |
| 5 |
| 3 |
| 10 |
=
| 9 |
| 10 |
| 1 |
| 2 |
| 12 |
| 10 |
| 3 |
| 10 |
=
| 9 |
| 10 |
| 9 |
| 20 |
=
| 9 |
| 10 |
| 20 |
| 9 |
=2;
④
| 4 |
| 29 |
| 3 |
| 4 |
| 3 |
| 8 |
=
| 4 |
| 29 |
| 6 |
| 8 |
| 3 |
| 8 |
=
| 4 |
| 29 |
| 3 |
| 8 |
=
| 4 |
| 29 |
| 5 |
| 8 |
=
| 5 |
| 58 |
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