Question

带答案脱式计算

Answer 1

0.4×125×25×0.8
=(0.4×25)×(125×0.8)
=10×100
=1000

1.25×(8+10)
=1.25×8+1.25×10
=10+12.5
=22.5

8123-(123+8.8)
=8123-123-8.8
=8000-8.8
=7991.2

1.24×8.3+8.3×1.76
=8.3×(1.24+1.76)
=8.3×3
=24.9

9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=1000*999

14.8×6.3-6.3×6.5+8.3×3.7
=(14.8-6.5)×6.3+8.3×3.7
=8.3×6.3+8.3×3.7
=8.3×(6.3+3.7)
=8.3×10
=83

1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78

933-157-43
=933-(157+43)
=933-200
=733

4821-998
=4821-1000+2
=3823

I32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000

2881÷ 43
=(1290+1591)÷ 434
=1290÷43+1591÷43
=30+37

3.2×42.3×3.75-12.5×0.423×16
=3.2×42.3×3.75-1.25×42.3×1.6
=42.3×(3.2×3.75-1.25×1.6)
=42.3×(9.6×1.25-1.25×4×0.4)
=42.3×[1.25×(9.6-1.6)]
=42.3×[1.25×8]
=42.3×10
=423

1.8+18÷1.5-0.5×0.3
=1.8+12-0.15
=13.8-0.15
=13.65

6.5×8+3.5×8-47
=52+28-47
=80-47

(80-9.8)×2/5-1.32
=70.2X2/5-1.32
=28.08-1.32
=26.76

8×4/7÷[1÷(3.2-2.95)]
=8×4/7÷[1÷0.25]
=8×4/7÷4
=8/7

2700×(506-499)÷900
=2700×7÷900
=18900÷900
=21

33.02-(148.4-90.85)÷2.5
=33.02-57.55÷2.5
=33.02-23.02
=10

(1÷1-1)÷5.1
=(1-1)÷5.1
=0÷5.1
=0

18.1+(3-0.299÷0.23)×1
=18.1+1.7×1
=18.1+1.7
=19.8