解答:。
6.3÷0.1= 14.14÷14= 8.5-1.05= 1.2: =
1+ = 632÷69≈ 0.33= =
31.5×0.931.5 5.42÷0.95.42 0.98×10.98
2.5×0.82.5÷0.8 3.56÷1.013.56 4.95÷14.95