29又3/4×4/3
=(30-1/4)×4/3
=30×4/3 -1/4×4/3
=40-1/3
=39又2/3
59又4/5×89又5/6÷1/2
=(60-1/5)×(90-1/6)×2
=(60-1/5)×(90×2-1/6×2)
=(60-1/5)×(180-1/3)
=60×180-60×1/3-1/5×180+1/5×1/3
=10800-20-36+1/15
=10744又1/15
29又3/4×4/3 59又5分之4乘八十九又六分之五除以二分之一的简单计算
29又3/4×4/3=27×4/3+2×4/3+3/4×4/3=36+8/3+1=39又2/3
59又5分之4乘八十九又六分之五除以二分之一
=(60-1/5)×(90-1/6)×2
=(60×90-60×1/6-90×1/5+1/5×1/6)×2
=(5400-10-18+1/30)
=5372×2+1/30×2
=10744+1/15
=10744又1/15
(30+2/3)×(30-2/3)