①1.25×0.8= ②10-8.9= ③0.4×0.02= ④0.63÷0.9=
⑤0.9÷0.01= ⑥0.7+0.23= ⑦16÷1.6= ⑧1.8×0.1=
A'( , ) B'( , ) C'( , )