- 递等式计算1、3.8*(1.24
- 1、3.8*(1.24-1.24/2)
2、3.25-0.86-1.
3、12.5*0.78*0.8
4、2.4*102
5、(7.7+1.4)/0.7
6、5.32*7.2+4.68*7.2
- 1、3.8×(1.24-1.24÷2)
=3.8×(1.24-0.62)
=(4-0.2)×0.62
=4×0.62-0.2×0.62
=2.48-0.124
=2.356
2、3.25-0.86-1.14
=3.25-(0.86+1.14)
=3.25-2
=1.25
3、12.5×0.78×0.8
=12.5×0.8×0.78
=10×0.78
=7.8
4、2.4×102
=2.4×(100+2)
=2.4×100+2.4×2
=240+4.8
=244.8
5、(7.7+1.4)÷0.7
=7.7÷0.7+1.4÷0.7
=11+2
=13
6、5.32×7.2+4.68×7.2
=(5.32+4.68)×7.2
=10×7.2
=72。