1.76加2.83加62目录
1.76x8 2.2x0.8x2
=1.76*8 2.2*2*0.1*8
=1.76*8 0.44*8
=8*(1.76 0.44)
=8*(2 0.2)
=16 1.6
=17.6
(-3.51) ( 2.83)
我们可以看做是(0-3.51) (0 2.83)
因为3.51》2.83
所以又可以去大的那个数的绝对值的符号故是减号(-)
即0-(3.51-2.83)
故0-0.68
所以=-0.68
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