问题
解答题
竖式计算(带☆的要验算,带▽的结果要精确到十分位.)
|
答案
(1)81.9÷39=2.1;
2.1
3981.9
78 39
;39 0
验算:
3 9
×2.1 39
;78 81.9
(2)0.46×7.2≈3.3;
0.46
×7.2 92
;322 3.312
(3)3.684÷0.12=30.7;
竖式计算(带☆的要验算,带▽的结果要精确到十分位.)
|
(1)81.9÷39=2.1;
2.1
3981.9
78 39
;39 0
验算:
3 9
×2.1 39
;78 81.9
(2)0.46×7.2≈3.3;
0.46
×7.2 92
;322 3.312
(3)3.684÷0.12=30.7;