如图,正方形OABC的顶点O在坐标原点,顶点A的坐标为(4,3)
仔细观察下图,结合所学知识回答:
1.5×30%=____ 6.8÷17=____ 42÷60%=____ 38+0.625=____
36÷0.6=____ 19 ÷ 34 =____ 7-0.35=____ 14 -25%=____
25 :10= ____ 312 × 47 =____