直接写得数．（14-17）×2=28×25=112+312=25+15×15=0.75×316×43=547-337=-|-212|=

Question

直接写得数．

（ (1)/(4) -(1)/(7) ）×2=	28×25=	1(1)/(2) +3(1)/(2) =	25+15× (1)/(5) =
0.75× (3)/(16) ×(4)/(3) =	5(4)/(7) -3(3)/(7) =	-|- 2(1)/(2) |=	（+4.5）+（-4.5）=

Answer 1

（ (1)/(4) -(1)/(7) ）×2= (3)/(14) 28×25=7001 (1)/(2) +3 (1)/(2) =5 25+15× (1)/(5) =28
0.75× (3)/(16) × (4)/(3) = (3)/(16) 5 (4)/(7) -3 (3)/(7) =2 (1)/(7) -|- 2(1)/(2) |=-2 (1)/(2) （+4.5）+（-4.5）=0