题目内容
计算
| 4.26+5.14+5.74+3.86 | 0.2+99×0.82 |
| 6÷0.3-0.3÷6 | 1.3×[2÷(4.1-4.05)]. |
(1)4.26+5.14+5.74+3.86
=(4.26+5.74)+(5.14+3.86)
=10+9
=19;
(2)0.2+99×0.82
=0.2+(100-1)×0.82
=0.2+100×0.82-0.82
=0.2+82-0.82
=81.38;
(3)6÷0.3-0.3÷6
=20-0.05
=19.95;
(4)1.3×[2÷(4.1-4.05)]
=1.3×[2÷0.05]
=1.3×40
=52.
=(4.26+5.74)+(5.14+3.86)
=10+9
=19;
(2)0.2+99×0.82
=0.2+(100-1)×0.82
=0.2+100×0.82-0.82
=0.2+82-0.82
=81.38;
(3)6÷0.3-0.3÷6
=20-0.05
=19.95;
(4)1.3×[2÷(4.1-4.05)]
=1.3×[2÷0.05]
=1.3×40
=52.
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