48*0.56+44*0.48

都市边沿人2022-10-04 11:39:542条回答

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磕不倒 共回答了12个问题 | 采纳率91.7%
=0.48*56+44*0.48=0.48*(56+44)=0.48*100=48
1年前
leiqihq 共回答了508个问题 | 采纳率
48*0.56+44*0.48
=0.48*(100-44)+44*0.48
=48-0.48*44+44*0.48
=48
1年前

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25×8=8.5-3.7=0.56÷0.07=4×9.2×0.25=[5/6−23]=[2/3+15]=[5/8−34+
25×8=
8.5-3.7=
0.56÷0.07=
4×9.2×0.25=
[5/6−
2
3]=
[2/3
+
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[5/8
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8]=
[14/1.5
3
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[3/5
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7]=
颠狂人生漂泊客 1年前 已收到1个回答 举报

习惯了一个人的夜 幼苗

共回答了13个问题采纳率:92.3% 举报

解题思路:根据整数、小数和分数加减乘除的计算方法进行计算.
4×9.2×0.25根据乘法交换律进行简算;
[5/8
3
4
+
3
8]根据加法交换律进行简算.

25×8=200,
8.5-3.7=4.8,
0.56÷0.07=8,
4×9.2×0.25=9.2,
[5/6−
2
3]=[1/6],
[2/3+
1
5]=[13/15],
[5/8−
3
4+
3
8]=[1/4],
[14/1.5−
3
7]=[187/21],
[3/5+
1
7]=[26/35].

点评:
本题考点: 小数的加法和减法;分数的加法和减法.

考点点评: 口算时,注意运算符号和数据,然后再进一步计算.

1年前

8
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3×1.5= 2.5×4= 0÷0.9= 4÷0.2= 0.56÷0.7= 0.24×5= 0.2×5= 2.1-0.8
3×1.5= 2.5×4= 0÷0.9= 4÷0.2=
0.56÷0.7= 0.24×5= 0.2×5= 2.1-0.87=
3.54-3.5= 3.4-1.5= 12÷0.6= 8×0.125=
0.7×11= 0.13+1.7= 3.15÷0.5= 0.9÷4.5=
0.2×0.3= 1.2+0.56= 3-1.7= 1÷0.25=
78÷1.3= 15÷0.3= 2.1+1.49= 6.24-1.5=
1.2×0.3= 6.3÷6.3= 1.6×0.2= 3.7-1.2=
4.58-3.5= 72.8÷8= 3.5×0.3= 0.25×100=
3.2-2= 0.51÷17= 5.3÷0.01= 1.03×3=
2.8+12= 3.5×2= 2.2×0.1= 1-0.25=
0.62-0.32= 6.3÷0.21= 1.7×10= 0.12×3=
0.45×2= 1.2÷0.3= 1÷2= 4.8×100=
0.25×8= 0.89÷8.9= 17.8+2.2= 0.8÷0.2=
5.79÷0.1= 0.35+0.65= 8.9-0.9= 9.2-9.2=
3.6÷0.4= 15.15÷15= 0.2×0.3×0.1= 1.34×4×2.5=
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解题思路:根据小数的加减乘除及四则混合运算进行计算即可.

3×1.5=4.5 2.5×4=10 0÷0.9=0 4÷0.2=20
0.56÷0.7=0.8 0.24×5=1.2 0.2×5=1 2.1-0.87=1.23
3.54-3.5=0.04 3.4-1.5=1.9 12÷0.6=20 8×0.125=1
0.7×11=7.7 0.13+1.7=1.83 3.15÷0.5=6.3 0.9÷4.5=0.2
0.2×0.3=0.06 1.2+0.56=1.76 3-1.7=1.3 1÷0.25=4
78÷1.3=60 15÷0.3=50 2.1+1.49=3.59 6.24-1.5=4.74
1.2×0.3=0.36 6.3÷6.3=1 1.6×0.2=0.32 3.7-1.2=2.5
4.58-3.5=1.08 72.8÷8=9.1 3.5×0.3=1.05 0.25×100=25
3.2-2=1.2 0.51÷17=0.03 5.3÷0.01=530 1.03×3=3.09
2.8+12=14.8 3.5×2=7 2.2×0.1=0.22 1-0.25=0.75
0.62-0.32=0.3 6.3÷0.21=30 1.7×10=17 0.12×3=0.36
0.45×2=0.9 1.2÷0.3=4 1÷2=0.5 4.8×100=480
0.25×8=2 0.89÷8.9=0.1 17.8+2.2=20 0.8÷0.2=4
5.79÷0.1=57.9 0.35+0.65=1 8.9-0.9=8 9.2-9.2=0
3.6÷0.4=9 15.15÷15=1.01 0.2×0.3×0.1=0.006 1.34×4×2.5=13.4

点评:
本题考点: 小数的加法和减法;小数乘法;小数除法.

考点点评: 口算题目,要求快速准确,能用简便方法的要用简便方法.

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-(0.12+0.34+0.56)x(0.12+0.34+0.56)+0.56x(0.12+0.34+0.56)
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3×1.5=
2.5×4=
0÷0.9=
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0.56÷0.04= 1.44÷2= 24.6÷0.6= 4.5÷0.15= 0.63÷0.09= 12.84÷1.2=

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0.63÷0.09=7, 12.84÷1.2=10.7, 3.9÷0.13=30, 1.6÷1.6=1,
20÷0.25=80, 1.3÷2.5=0.52, 100÷12.5=8, 7.8÷0.13=60,
3.24÷0.8=4.05, 13×1.1=14.3, 5.46÷3=1.82, 4.07×3=12.21,
5.28t-1.99t=3.29t, 0.6+89=89.6, 5.7×0.1=0.57, 1.6÷0.4=4,
6÷0.3=20, 5÷0.25=20, 0.45×3=1.35, 0.35×8=2.8,
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4.2-2.8=1.4, 7.2÷1.6=4.5, 19.8+3.2=23, 18-17.45=0.55,
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0.42×0.5=0.21, 0.76+1.24=2, 3.06-0.72=2.34, 0.51÷17=0.03,
5.2÷13=0.4, 8.2×0.01=0.082, 1.72-0.73=0.99, 1.6×0.4=0.64,
4.8b+3.2b=8b, 2.5×4=10, 0.3×101=30.3, 1.2×0.5=0.6. 故答案为:14,0.72,41,30;7,10.7,30,1;80,0.52,8,60;4.05,14.3,1.82,12.21;3.29t,89.6,0.57,4;20,20,1.35,2.8;6.34,0.36,0.19,15.2;1.4,4.5,23,0.55;6,x,10,0.23;0.98,0.08,1,0.17;8.2a,0.96,2,0.075;0.1,0.4,4.85,34.7;0.21,2,2.34,0.03;0.4,0.082,0.99,0.64;8b,10,30.3,0.6.
0.08 *7.5+7/0.56
zzy_19741年前1
川上行者 共回答了27个问题 | 采纳率92.6%
0.08 *7.5+7/0.56
=2/25 × 25 × 0.3 +7/(7×0.08)
=2×0.3+25/2
=0.6+12.5
=13.1
0.56×15/28= 8/7×0.25= 7/15+3/10= 2-5/8= 2.7×4/9=
0.56×15/28= 8/7×0.25= 7/15+3/10= 2-5/8= 2.7×4/9=
0.56×15/28=
8/7×0.25=
7/15+3/10=
2-5/8=
2.7×4/9=
10/21×0.28=
kdfj21年前1
不为风动 共回答了22个问题 | 采纳率95.5%
1.563
0.56+6.37-2.81
uljiqplmfk1年前1
草草公子 共回答了28个问题 | 采纳率96.4%
4,12
﹙1+0.23+0.34﹚×﹙0.23+0.34+0.56)-﹙1+0.23+0.34+0.56﹚×﹙0.23+0.34
﹙1+0.23+0.34﹚×﹙0.23+0.34+0.56)-﹙1+0.23+0.34+0.56﹚×﹙0.23+0.34)
love_gill1年前1
shi1872 共回答了13个问题 | 采纳率92.3%
这就是个移项问题
(1+0.23+0.34)X (0.23+0.34+0.56)-[ (1+0.23+0.34)X(0.23+0.34)+0.56X(0.23+0.34)]
=(1+0.23+0.34)X (0.23+0.34+0.56)-(1+0.23+0.34)X(0.23+0.34)-0.56X(0.23+0.34)
=(1+0.23+0.34)X (0.23+0.34+0.56-0.23-0.34)-0.56X(0.23+0.34)
=(1+0.23+0.34)X 0.56-0.56X(0.23+0.34)
=0.56
(1+0.34+0.45+0.56)*(0.34+0.45+0.56+0.67)-(1+0.34+0.56+0.45+0
(1+0.34+0.45+0.56)*(0.34+0.45+0.56+0.67)-(1+0.34+0.56+0.45+0.67)*(0.34+0.45+0.56)
时间只有1个小时了,求求啊.
哈姆大象1年前1
1难得糊涂1 共回答了18个问题 | 采纳率88.9%
令a=0.34+0.45+0.56
原式=(1+a)(a+0.67)-(1+a+0.67)a
=(1+a)a+0.67(1+a)-(1+a)a-0.67a
=0.67(1+a)-0.67a
=0.67+0.67a-0.67a
=0.67
10.1-5.4*0.5+8.4/0.56
hjaa1231年前0
共回答了个问题 | 采纳率
巧算:0.56*9.8
hewenxiu2ysg1年前1
眼泪做的冰 共回答了18个问题 | 采纳率83.3%
5.6-1.12=4.48
(1)x+39=120 (2)2.4x=7.2 (3)4.5x=27 (4)x÷100=0.56
deanfang1年前1
盒饭之无名 共回答了18个问题 | 采纳率88.9%
(1)x+39=120
    x=120-39
    x=81 (2)2.4x=7.2
    x=7.2÷2.4
    x=3
(3)4.5x=27
    x=27÷4.5
    x=6 (4)x÷100=0.56
    x=0.56×100
    x=56
0.56*(2又5/12-1又19/60+2.275)/0.5
成都大樱桃1年前1
路过的宋兵 共回答了19个问题 | 采纳率94.7%
0.56*(2又5/12-1又19/60+2.275)/0.5
=0.56*(2又25/60-1又19/60+2.275)/0.5
=0.56*(1又6/60+2.275)/0.5
=0.56*(1.1+2.275)/0.5
=0.56*3.375/0.5
=1.89/0.5
=3.78
看似简单 其实还挺麻烦