Question

计算下面各题，能简算的要简算？

Answer 1

(1) 4/5x2/13x5/4
=(4/5x5/4)x2/13
=1x2/13
=2/13。
(2) 3.3x5/3-3/5x1/3
=1.1x5-1/5
=5.5-0.2
=5.3。
(3) 9/10x2/3+3/5
=3/5+3/5
=6/5
=1又1/5。
(4) 4/3x(4-1/4)
=4/3x(3+3/4)
=4-1
=3。
(5) 1/25x101
=1/25x(100+1)
=4+1/25
=4又1/25。
(6) (2/5+3/8)x5x8
=2/5x5x8+3/8x5x8
=16+15
=31。
(7) 2/5x3/8x5x8
=2x3
=6。
(8) (5/12-1/18)x36
=5/12x36-1/18x36
=15-2
=13。
(9) (6-3/4)x4/3
=6x4/3-3/4x4/3
=8-1
=7。