题目内容

【题目】直接写出得数.

5.7+11.8+4.3= 2+= (+)×24= 0.32﹣0.22=

33×98+66= 10.1×99﹣9.9= 4﹣(+0.5)=    =

8×12.5%= =

【答案】21.8,2,7,0.05,3300,990,3.5,,1,0.75

【解析】

试题分析:(1)(2)运用加法交换律和结合律解答,

(3)(5)(6)运用乘法分配律解答,

(4)根据求一个数的平方计算方法解答,

(7)依据减法性质解答,

(8)依据比例基本性质解答,

(9)依据小数四则运算计算方法解答,

(10)依据除法性质解答.

解:5.7+11.8+4.3=21.8; 2+=2; (+)×24=7; 0.32﹣0.22=0.05;

33×98+66=3300; 10.1×99﹣9.9=990; 4﹣(+0.5)=3.5; =

8×12.5%=1; =0.75.

故答案依次为:21.8,2,7,0.05,3300,990,3.5,,1,0.75.

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网