计算各题.(能简算的要简算)5/6+1/6×25%+75%70%÷(1-3/5×125%)31/8×35%+0.35×6.1251/3×5×2/5÷1/33/4-5/8×3/414/25÷(1/5+1/2)

问题描述:

计算各题.(能简算的要简算)
5/6+1/6×25%+75%
70%÷(1-3/5×125%)
31/8×35%+0.35×6.125
1/3×5×2/5÷1/3
3/4-5/8×3/4
14/25÷(1/5+1/2)

计算各题。(能简算的要简算)
5/6+1/6×25%+75%
=5/6+1/24+3/4
=7/8+3/4
=1又5/8
70%÷(1-3/5×125%)
=70%÷(1-3/4)
=70%÷1/4
=2.8
31/8×35%+0.35×6.125
=35%×(31/8+6.125)
=35%×10
=3.5
1/3×5×2/5÷1/3
=(1/3÷1/3)×(5×2/5)
=1×2
=2
3/4-5/8×3/4
=3/4×(1-5/8)
=3/4×3/8
=9/32
14/25÷(1/5+1/2)
=14/25÷7/10
=4/5

(1)
5/6+1/6×25%+75%
=5/6+1/6×1/4+3/4
=20/24+1/24+18/24
=(20+1+18)/24
=39/24
=13/8
(2)
70%÷(1-3/5×125%)
=0.7÷(1-3/5×5/4)
=0.7÷(1-3/4)
=0.7÷1/4
=0.7×4
=2.8
(3)
31/8×35%+0.35×6.125
=3.875×0.35+0.35×6.125
=0.35×(3.875+6.125)
=0.35×10
=3.5
(4)1/3×5×2/5÷1/3
=1/3÷1/3×5×2/5
=5×2/5
=2
(5)
3/4-5/8×3/4
=3/4×(1-5/8)
=3/4×3/8
=9/32
(6)
14/25÷(1/5+1/2)
=14/25÷(2/10+5/10)
=14/25÷7/10
=14/25×10/7
=4/5