Question

4.9/0.125等于多少 咋样用简便方法计算

Answer 1

4.9/0.125= 4.9 * 8 / (0.125*8)= 4.9 * 8 / 1= 4.9 *8= (5 -0.1) * 8 = 5 * 8 - 0.1 * 8 = 40- 0.8= 39.2

Answer 2

4.9÷0.125
＝4.9÷1／8
＝﹙5－0.1﹚×8
＝39.2

Answer 3

先把小数点去掉 =4900/125然后约分

Answer 4

1/0.125=8 …你再乘一下