Question

直接写得数． 1 2 - 1 3 = 1 5 - 1 6 = 1 4 +

直接写得数． 1 2 - 1 3 = 1 5 - 1 6 = 1 4 + 1 5 = 5 6 + 2 5 = 1- 1 7 - 1 8 = 1.92×0.04= 2.5×0.2= 0.125+ 7 8 =

Answer 1

1 2 - 1 3 = 1 6 ， 1 5 - 1 6 = 1 30 ， 1 4 + 1 5 = 9 20 ， 5 6 + 2 5 = 37 30 ， 1- 1 7 - 1 8 =41， 1.92×0.04=0.0768， 2.5×0.2=0.5， 0.125+ 7 8 =1．