早教吧作业答案频道 -->数学-->
计算(写出计算过程).(1)(-3.14)+(+4.96)+(+2.14)+(-7.96)(2)(-218)+(+5)+(-312)+(+1.125)+(+412)(3)(-3.2)×1.5(4)134×(-8)(5)(-4)×13
题目详情
计算(写出计算过程). (1)(-3.14)+(+4.96)+(+2.14)+(-7.96) (2) (-2
(3)(-3.2)×1.5 (4) 1
(5) (-4)×
(6) 24×(
(7)(
(8)-99
(9) 2011×2
(10)-125÷(-25)-64÷(-4) (11)2×(-3) 2 -5÷
(12) (-2 ) 3 ×8-8×(
|
▼优质解答
答案和解析
(1)(-3.14)+(+4.96)+(+2.14)+(-7.96) =-3.14+2.14+4.96-7.96 =-1-3 =-4; (2) (-2
=-2.125+1.125-3.5+4.5+5 =-1+1+5 =5; (3)(-3.2)×1.5 =-4.8; (4) 1
=-22; (5) (-4)×
=-4×
=-200; (6) 24×(
=24×
=3-4-6 =-7; (7)(
=
=-9+4+2+3 =0; (8)-99
=(-100+
=-100×9+
=-900+
=-899
(9) 2011×2
=0; (10)-125÷(-25)-64÷(-4) =5+16 =21; (11)2×(-3) 2 -5÷
=2×9-5×2×2 =18-20 =-2; (12) (-2 ) 3 ×8-8×(
=-8×8-8×
=-64-1+64 =-1. |
看了 计算(写出计算过程).(1)...的网友还看了以下:
帮我破解下这串数字什么意思9(2)4(3)6(2)2(1)4(3)3(1)4(3)9(1)6(3) 2020-05-17 …
(1)x^3根号下(4-x^2)(2)根号下[(x^2-9)/x^2](1)-4/3(4-x^2) 2020-05-20 …
数学填空题(10题)急~~(1.)计算:1/2+1/3+1/4=(2).计算:2-1/2-1/4= 2020-06-02 …
哥哥姐姐帮帮我,我给你们20,回答的快在加,信誉!直接写得数.1/7+5/7=1/4+1/3=4/ 2020-07-03 …
用含有n的式子表示1/2,2/3,3/4,4/5……2,5/2,3,7/2……1/4,-3/8,5 2020-07-13 …
找规律(1)1,1,2,3,5,8,(),21,34(2)1,3,6,10,(),21,28,36 2020-07-17 …
观察式子√1+1/3=2√1/3,√2+1/4=3√1/4,√3+1/5=4√1/5,…请你将才想 2020-07-31 …
求解数字推理题:1.2,1,4,3,(),5.A1B2C3D62.4,3,1,12,9,3,17,5 2020-10-31 …
下列各项在我国出现的先后顺序是?()1,使用骨针缝衣2,采用天然火3,制作黑白陶器4,用麻纺制成品A 2020-12-07 …
1)2009减去它的1/2,再减去余下的1/3,再减去余下的1/4,以此类推,一直到最后减去余下的1 2020-12-28 …