题目内容
选择你喜欢的方法计算。
|
| (1)原式=(2.74+3.26)+(12.6+7.4) =6+20 =26 |
(2)原式=0.5+0.8 =1.3 |
(3)原式=6.9×(10-0.1) =69-0.69 =68.31 |
| (4)原式=3.6×0.25 =0.9 |
(5)原式=199+19+9+3×0.7+0.9 =199+28+3 =230 |
(6)原式=3.72×(2.9+7.1) =3.72×10 =37.2 |
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题目内容
选择你喜欢的方法计算。
|
| (1)原式=(2.74+3.26)+(12.6+7.4) =6+20 =26 |
(2)原式=0.5+0.8 =1.3 |
(3)原式=6.9×(10-0.1) =69-0.69 =68.31 |
| (4)原式=3.6×0.25 =0.9 |
(5)原式=199+19+9+3×0.7+0.9 =199+28+3 =230 |
(6)原式=3.72×(2.9+7.1) =3.72×10 =37.2 |