Question

脱式计算能简便的要简便五又4/5+3/8减一又4/5+0.125等于多少

递等式计算,能简便的简便!
[ 4又2/5－(2.5＋1.9×0.5)] 0.125×3/4＋1/8×8.25＋12.5％
(7/8＋13/16)÷13/16 2.5×3/7×0.4×2又1/3

Answer 1

1.[ 4又2/5－(2.5＋1.9×0.5)]
=4.4-(2.5+0.95)
=4.4-3.45
=0.95
2.0.125×3/4＋1/8×8.25＋12.5％
=0.125×3/4＋0.125×8.25＋0.125
=0.125×(0.75+8.25+1)
=0,.125×10
=1.25
3.(7/8＋13/16)÷13/16
=7/8 ÷13/16+13/16÷13/16
=14/13+1
=27/13
4.2.5×3/7×0.4×2又1/3
=2.5×0.4×3/7×7/3
=1×1
=1