0.8x33x1.257.2x9.9

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0.8x33x1.257.2x9.9

0.8x33x1.257.2x9.9
0.8x33x1.25
7.2x9.9

0.8x33x1.257.2x9.9
0.8x33x1.25
=4/5×5/4×33
=1×33
=33
7.2x9.9
=7.2×(10-0.1)
=7.2×10-7.2×0.1
=72-0.72
=71.28

0.8x33x1.25
=33x(0.8x1.25)
=33x1
=33
7.2x9.9
=7.2x(10-0.1)
=7.2x10-7.2x0.1
=72-0.72
=71.28

0.8*33*1.25=0.8*1.25*33=1*33=33
7.2*9.9=7.2*(10-0.1)=7.2*10-7.2*0.1=72-0.72=71.28

0.8*33*1.25=1*33=33
7.2*9.9=7.2*(10-0.1)=72-0.72=71.28