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脱式计算.3.6×10.15.2×(4.7-1.9)0.98+4.3×1.25.
题目详情
脱式计算.
3.6×10.1 | 5.2×(4.7-1.9) | 0.98+4.3×1.25. |
▼优质解答
答案和解析
(1)3.6×10.1,
=3.6×(10+0.1),
=3.6×10+3.6×0.1,
=36+0.36,
=36.36;
(2)5.2×(4.7-1.9),
=5.2×2.8,
=14.56;
(3)0.98+4.3×1.25,
=0.98+5.375,
=6.355.
(1)3.6×10.1,
=3.6×(10+0.1),
=3.6×10+3.6×0.1,
=36+0.36,
=36.36;
(2)5.2×(4.7-1.9),
=5.2×2.8,
=14.56;
(3)0.98+4.3×1.25,
=0.98+5.375,
=6.355.
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