(1)4.6×8+四又五分之三×2
=4.6×(8+2)
=4.6×10
=46
(2)64.5×十一分之一+十一分之一×三十四又二分之一
=(64.5+34.5)×1/11
=99×1/11
=9
(3)102×5.6—5.6×2
=(102-2)×5.6
=100×5.6
=560
(4)25×三分之一÷二分之五×十分之三
=(25÷5/2)×(1/3×3/10)
=10×1/10
=1
(5)13.09-8.12-4.88
=13.09-(8.12+4.88)
=13.09-13
=0.09