脱式计算,能简算的要简算. 1.69÷1.3+2.5×0.4 1.25×32×2.5 96.5×105-5×96.
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脱式计算,能简算的要简算.
1.69÷1.3+2.5×0.4 | 1.25×32×2.5 | 96.5×105-5×96.5 | 18.75-0.43-4.57. |
![脱式计算,能简算的要简算. 1.69÷1.3+2.5×0.4 1.25×32×2.5 96.5×105-5×96.](/uploads/image/z/6236207-71-7.jpg?t=%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%8C%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E8%A6%81%E7%AE%80%E7%AE%97%EF%BC%8E+1.69%C3%B71.3%2B2.5%C3%970.4%E3%80%80%E3%80%80%E3%80%80+1.25%C3%9732%C3%972.5+96.5%C3%97105-5%C3%9796.)
(1)1.69÷1.3+2.5×0.4,
=1.3+1,
=2.3;
(2)1.25×32×2.5,
=1.25×(8×4)×2.5,
=(1.25×8)×(4×2.5),
=10×10,
=100;
(3)96.5×105-5×96.5,
=96.5×(105-5),
=96.5×100,
=9650;
(4)18.75-0.43-4.57,
=18.75-(0.43+4.57),
=18.75-5,
=13.75.
=1.3+1,
=2.3;
(2)1.25×32×2.5,
=1.25×(8×4)×2.5,
=(1.25×8)×(4×2.5),
=10×10,
=100;
(3)96.5×105-5×96.5,
=96.5×(105-5),
=96.5×100,
=9650;
(4)18.75-0.43-4.57,
=18.75-(0.43+4.57),
=18.75-5,
=13.75.