问题
填空题
0.08的倒数是______,2.25的倒数是______.
答案
由倒数的定义可得:
1÷0.08=12.5,0.08的倒数是12.5;
1÷2.25=1÷
=1÷225 100
=1×9 4
=4 9
,2.25的倒数是4 9
.4 9
故答案为:12.5,
.4 9
0.08的倒数是______,2.25的倒数是______.
由倒数的定义可得:
1÷0.08=12.5,0.08的倒数是12.5;
1÷2.25=1÷
=1÷225 100
=1×9 4
=4 9
,2.25的倒数是4 9
.4 9
故答案为:12.5,
.4 9