题目内容
用你喜欢的方法计算.
7×12.5×0.8
4.7×3.6+4.6×6.
4.45×[(2.8+4.4)÷2.4]
(1.96÷0.6-3.3)×19.
7×12.5×0.8
4.7×3.6+4.6×6.
4.45×[(2.8+4.4)÷2.4]
(1.96÷0.6-3.3)×19.
①7×12.5×0.8
=7×(12.5×0.8)
=7×10
=70;
②4.7×3.6+4.6×6
=16.92+27.6
=44.52;
③4.45×[(2.8+4.4)÷2.4]
=4.45×(7.2÷2.4)
=4.45×3
=13.35;
④(1.96÷0.6-3.3)×19
=(3
-3
)×19
=(
-
)×19
=(-
)×19
=-
.
=7×(12.5×0.8)
=7×10
=70;
②4.7×3.6+4.6×6
=16.92+27.6
=44.52;
③4.45×[(2.8+4.4)÷2.4]
=4.45×(7.2÷2.4)
=4.45×3
=13.35;
④(1.96÷0.6-3.3)×19
=(3
| 4 |
| 15 |
| 3 |
| 10 |
=(
| 8 |
| 30 |
| 9 |
| 30 |
=(-
| 1 |
| 30 |
=-
| 19 |
| 30 |
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