口算． 5÷50%=0.6× =9× ÷9× =1﹣ + =85%﹣15%=9.3÷0.03=9.2×1.9≈7208÷92≈

微信扫码预览、分享更方便

5÷50%=	0.6× $\text{[math]}$ =	9× $\text{[math]}$ ÷9× $\text{[math]}$ =	1﹣ $\text{[math]}$ + $\text{[math]}$ =
85%﹣15%=	9.3÷0.03=	9.2×1.9≈	7208÷92≈

1. (2016·西吉模拟) 口算． 5÷50%=0.6× =9× ÷9× =1﹣ + =85%﹣15%=9.3÷0.03=9.2×1.9≈7208÷92≈