填空:
(+15/4)-_____= -5/4 (+1/3)-(-2/3)=____
(+16/5)-____=+1 0-_____=0.321
计算:
(+17又5/6)-(-30又1/18) (-3/64)-(+24又3/8)
填空:
(+15/4)-_____= -5/4 (+1/3)-(-2/3)=____
(+16/5)-____=+1 0-_____=0.321
计算:
(+17又5/6)-(-30又1/18) (-3/64)-(+24又3/8)
(+15/4)-_4____= -5/4 (+1/3)-(-2/3)=-1/4____
(+16/5)-_2.879___=+1 0-_9.679____=0.321