1樓:航航成長集
5.5-4.9+4.5
=5.5+4.5-4.9
=10-4.9
=5.1
脫式計算能簡算的要簡算。80.614÷25.6+4.75。用簡便計算。
2樓:歡歡喜喜
本題沒bai有簡便的計算方法。
du脫式計算是乙個數學學科術zhi
語,即遞等式計dao
算,把計算過程回完整寫出來的運算,也答就是脫離豎式的計算。
80.614÷25.6+4.75
=3.148984375+4.75
=7.898984375。
4.9x5.5十4.9x4.5的簡便計算
3樓:瘸腿的傲嬌喵
原式=4.9x(5.5+4.5)=4.9x10=49
希望採納
4樓:匿名使用者
4.9x(5.5+4.5)=49
小朋友這樣做作業是不好的習慣哦,記得自己思考一下。
5樓:啟程
=4.9×(5.5+4.5)=4.9×10=49
6樓:雨在下雪花飄
5.5+4.5=10x4.9=49
5/8+5/9+4/9脫式計算能簡算的要簡算?
7樓:匿名使用者
用加法結合律可以簡算
原式=5/8+(5/9+4/9)
=5/8+1
=13/8
脫式計算能簡便就要簡便
8樓:水色燕子
3/7 × 49/9 - 4/3
8/9 × 15/36 + 1/27
12× 5/6 – 2/9 ×3
8× 5/4 + 1/4
6÷ 3/8 – 3/8 ÷6
4/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )
7/8 + ( 1/8 + 1/9 )
9 × 5/6 + 5/6
3/4 × 8/9 - 1/3
7 × 5/49 + 3/14
6 ×( 1/2 + 2/3 )
8 × 4/5 + 8 × 11/5
31 × 5/6 – 5/6
9/7 - ( 2/7 – 10/21 )5/9 × 18 – 14 × 2/7
4/5 × 25/16 + 2/3 × 3/414 × 8/7 – 5/6 × 12/1517/32 – 3/4 × 9/24
3 × 2/9 + 1/3
5/7 × 3/25 + 3/7
3/14 ×× 2/3 + 1/6
1/5 × 2/3 + 5/6
9/22 + 1/11 ÷ 1/2
5/3 × 11/5 + 4/3
45 × 2/3 + 1/3 × 15
7/19 + 12/19 × 5/6
1/4 + 3/4 ÷ 2/3
8/7 × 21/16 + 1/2
101 × 1/5 – 1/5 × 21
7/8-5/6+11/12
6/7+5/14-1/2
8-17/42-25/42
1-5/9-(2/3+5/9)
5/9-(1/6+1/12)
11/12-2/9+1/12-7/9
7/12+5/6-3/4
4/5-2/3+7/6
2/3+(5/7-5/14)
8/9-(5/6-3/4)
14/15-(1/4+7/30)
29/30-(14/15-3/4)
13/24+7/8+11/24
3-17/18-19/18
7/9+2/3-4/9
5/8+1/2+3/4
19/24+11/12-3/4
14/15+4/5-2/3
13/12-1/2-1/3
4/9-1/6+4/3
6/7-3/14+1/2
1-1/2+3/4
1/2-1/3-1/6
9/11+7/2-9/22
8/9-1/3+5/6
7/12+1/3-1/4
7/25+4/5-1/2
1/4+2/3-1/12
3/8+5/8-1
3/7-1/2+9/14
235 - 135÷18
35 ×153 – 0.6×53
(45 +14 )÷73 +710
10 - 719 - 1219 + 11925×13 ÷52 ×310
13.09-8.12-4.88
12×103-4500÷75
18 ×[12 ÷(35 ×109 )]
(215 +311 )×15×11
37.5+19.5÷2.5×4
6.9+4.8+3.1
0.456+6.22+3.78
15.89+(6.75-5.89)
4.02+5.4+0.98
5.17-1.8-3.2
13.75-(3.75+6.48)
3.68+7.56-2.68
7.85+2.34-0.85+4.66
35.6-1.8-15.6-7.2
3.82+2.9+0.18+9.1
9.6+4.8-3.6
7.14-0.53-2.47
5.27+2.86-0.66+1.63
13.35-4.68+2.65
73.8-1.64-13.8-5.36
47.8-7.45+8.8
0.398+0.36+3.64
15.75+3.59-0.59+14.2566.86-8.66-1.34
0.25×16.2×4
(1.25-0.125)×8
3.6×102
3.72×3.5+6.28×3.5
36.8-3.9-6.1
15.6×13.1-15.6-15.6×2.14.8×7.8+78×0.52
32+4.9-0.9
4.8×100.1
56.5×9.9+56.5
7.09×10.8-0.8×7.09
25.48-(9.4-0.52)
4.2÷3.5
320÷1.25÷8
18.76×9.9+18.76
3.52÷2.5÷0.4
3.9-4.1+6.1-5.9
5.6÷3.5
9.6÷0.8÷0.4
4.2×99+4.2
17.8÷(1.78×4)
0.49÷1.4
1.25×2.5×32
3.65×10.1
15.2÷0.25÷4
0.89×100.1
146.5-(23+46.5)
3.83×4.56+3.83×5.44
4.36×12.5×8
9.7×99+9.7
27.5×3.7-7.5×3.7
8.54÷2.5÷0.4
0.65×101
3.2×0.25×12.5
(45.9-32.7)÷8÷0.125
3.14×0.68+31.4×0.032
5.6÷1.25÷0.8÷2.5÷0.4
7.2×0.2+2.4×1.4
8.9×1.01
7.74×(2.8-1.3)+1.5×2.263.9×2.7+3.9×7.3
18-1.8÷0.125÷0.8
12.7×9.9+1.27
21×(9.3-3.7)-5.6
15.02-6.8-1.02
5.4×11-5.4
2.3×16+2.3×23+2.3
9.43-(6.28-1.57)
3.65×4.7-36.5×0.37
46×57+23×86
13.7×0.25-3.7÷4
2.22×9.9+6.66×6.7
101×0.87-0.91×87
10.7×16.1-15.1×10.7
0.79×199
4.8+8.63+5.2+0.37
5.93+0.19+2.81
1.76+0.195+3.24
2.35+1.713+0.287+7.651.57+0.245+7.43
6.02+3.6+1.98
0.134+2.66+0.866
1.27+3.9+0.73+16.1
7.5+4.9-6.5
3.07-0.38-1.62
1.29+3.7+2.71+6.3
8-2.45-1.55
3.25+1.79-0.59+1.75
23.4-0.8-13.4-7.2
0.32×403
3.2+0.36+4.8+1.64
1.23+3.4-0.23+6.6
0.25×36
12.7-(3.7+0.84)
36.54-1.76-4.54
0.25×0.73×4
7.6×0.8+0.2×7.6
0.85×199
0.25×8.5×4
1.28×8.6+0.72×8.6
12.5×0.96×0.8
10.4-9.6×0.35
0.8×(4.3×1.25)
3.12+3.12×99
28.6×101-28.6
0.86×15.7-0.86×14.7
2.4×102
2.31×1.2×0.5
14-7.32-2.68
2.64+8.67+7.36+11.33
70÷28
(2.5-0.25)×0.4
9.16×1.5-0.5×9.16
3.6-3.6×0.5
63.4÷2.5÷0.4
4.9÷1.4
3.9÷(1.3×5)
(7.7+1.54)÷0.7
2.5×2.4
2.7÷45
15÷(0.15×0.4)
0.35×1.25×2×0.8
32.4×0.9+0.1×32.4
15÷0.25
4.5÷1.8
4.2÷3.5
930÷0.6÷5
脫式計算(能簡便的要簡便計算) 4.5×5.2+4.5×4.8 8.8×1.25 0.4×(4.3×2.5) 60.8-1.7
9樓:手機使用者
(1)4.5×
5.2+4.5×4.8
=4.5×(5.2+4.8)
=4.5×10
=45;
(2)8.8×1.25
=(8+0.8)×1.25
=8×1.25+0.8×1.25
=10+1
=11;
(3)0.4×(4.3×2.5)
=4.3×(0.4×2.5)
=4.3×1
=4.3;
(4)60.8-1.75-1.25
=60.8-(1.75+1.25)
=60.8-3
=57.8;
(5)0.4×(4.3×2.5)
=4.3×(0.4×2.5)
=4.3×1
=4.3;
(6)45×10.1
=45×(10+0.1)
=45×10+45×0.1
=450+4.5
=454.5;
(7)0.63+0.42+0.37+9.58=(0.63+0.37)+(0.42+9.58)=1+10
=11;
(8)8.36×99+8.36
=8.36×(99+1)
=8.36×100
=836;
(9)0.78×99
=0.78×(100-1)
=0.78×100-0.78×1
=78-0.78
=77.22;
(10)90÷(3.6-1.8)
=90÷1.8
=50;
(11)36÷[(6.1-4.6)×0.8]=36÷[1.5×0.8]
=36÷1.2
=30;
(12)1.6×(2.25+10.5÷1.5)=1.6×(2.25+7)
=1.6×9.25
=14.8;
(13)12.75÷[14.6-(1.3+8.2)]=12.75÷[14.6-9.5]
=12.75÷5.1
=2.5;
(14)3.2+3.91÷(19-16.7)=3.2+3.91÷2.3
=3.2+1.7
=4.9.
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