如题所述
0.4Ã125Ã25Ã0.8
=(0.4Ã25)Ã(125Ã0.8)
=10Ã100=1000
1.25Ã(8+10)
=1.25Ã8+1.25Ã10
=10+12.5=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
1.24Ã8.3+8.3Ã1.76
=8.3Ã(1.24+1.76)
=8.3Ã3=24.9
9999Ã1001
=9999Ã(1000+1)
=9999Ã1000+9999Ã1
=10008999
14.8Ã6.3-6.3Ã6.5+8.3Ã3.7
=(14.8-6.5)Ã6.3+8.3Ã3.7
=8.3Ã6.3+8.3Ã3.7
8.3Ã(6.3+3.7)
=8.3Ã10
=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
I32Ã125Ã25
=4Ã8Ã125Ã25
=(4Ã25)Ã(8Ã125)
=100Ã1000
=100000
9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348
2881÷ 43
=(1290+1591)÷ 434
=1290÷43+1591÷43
=30+37
=(0.4Ã25)Ã(125Ã0.8)
=10Ã100=1000
1.25Ã(8+10)
=1.25Ã8+1.25Ã10
=10+12.5=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
1.24Ã8.3+8.3Ã1.76
=8.3Ã(1.24+1.76)
=8.3Ã3=24.9
9999Ã1001
=9999Ã(1000+1)
=9999Ã1000+9999Ã1
=10008999
14.8Ã6.3-6.3Ã6.5+8.3Ã3.7
=(14.8-6.5)Ã6.3+8.3Ã3.7
=8.3Ã6.3+8.3Ã3.7
8.3Ã(6.3+3.7)
=8.3Ã10
=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
I32Ã125Ã25
=4Ã8Ã125Ã25
=(4Ã25)Ã(8Ã125)
=100Ã1000
=100000
9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348
2881÷ 43
=(1290+1591)÷ 434
=1290÷43+1591÷43
=30+37
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第1个回答 2017-10-02
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
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
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
=10008999
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
9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348
2881÷ 43
=(1290+1591)÷ 434
=1290÷43+1591÷43
=30+37
=(0.4×25)×(125×0.8)
=10×100=1000
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
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
=10008999
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
9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348
2881÷ 43
=(1290+1591)÷ 434
=1290÷43+1591÷43
=30+37