Question

计算:(1)3又四分之三×0.8 (2)1.25÷四分之三 (3)0.28÷十五分之七(4)1又六分之一×0.54 解方

Answer 1

(1)原式=15/4 x 0.8=3

(2)原式=1.25 x 4/3=5/3

(3)原式=0.28 x 15/7=0.6

(4)原式=7/6 x 0.54=0.63

(1)x=10.75+2.55=13.3

(2)x=7.2-17/3=21.6/3-17/3=4.6/3

(3)x=6.625-11/12=79.5/12-11/12=68.5/12

(4)x=58/25-1.82+26/7=(406-318.5+650)/175=737.5/175