1樓:暗朇
(1)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;
(2)5 7
÷[1÷(2 3
-1 5
)],=5 7
÷[1÷7
15],
=5 7
÷15 7
,=1 3
;(3)0.8×[1÷(3.2-2.95)],=0.8×[1÷0.25],
=0.8×4,
=3.2.
脫式計算(能簡算的要簡算
2樓:軒胤
(1)6.72-2.3÷0.5×0.8
=6.72-4.6×0.8
=6.72-3.68
=3.04;
(2)98-1
7+18-6
7=(98+1
8)-(17+6
7)=54
-1=14;
(3)9
10÷[1
2×(65-3
10)]
=910
÷[12
×910]=9
10÷9
20=2;
(4)(27+1
5)×7×5=27
×7×5+1
5×7×5
=10+7
=17.
4.82-5.2÷0.8x0.6的簡便計算法
3樓:楓葉
4.82-5.2÷0.8×0.6
=4.82-6.5×0.6
=4.82-3.9
=0.92
你好,本題已解答,如果滿意
請點右下角「採納答案」。
(5.32 0.98)÷0.0449÷(0.25÷4)脫式計算怎麼算?
4樓:
0.175÷0.25÷0.4
=0.175÷(0.25x0.4)
=0.175÷(0.1)
=1.75
5樓:死你碼綠茶倩
(1)6760÷bai13+17×du25,
zhi =520+425,dao =945;(
回2)4.82-5.2÷0.
8×答0.6, =4.82-6.
5×0.6, =4.82-3.
9, =0.92;(3)35÷7 8 ×1-2 7 =40×1-2 7 , =40-2 7 , =395 7 .
脫式計算,4/5÷[8×(1/2-2/5)],[1-(1/4+3/8)]÷1/4?
6樓:匿名使用者
4/5÷[8×
(1/2-2/5)]
=4/5÷[8×1/10]
=4/5÷4/5
=1[1-(1/4+3/8)]÷1/4
=[1-5/8]÷1/4
=3/8÷1/4
=3/2
9×13×(5/13+5/9)
=9×13×5/13+9×13×5/9
=45+65
=110
7樓:妙酒
4/5÷[8×(1/2-2/5)]
=4/5÷(8x1/10)
=4/5÷4/5
=1[1-(1/4+3/8)]÷1/4
=(1-5/8)x4
=3/8x4
=3/2
9×13×(5/13+5/9)
=9x13x5/13+9x5/9x13
=9x5+5x13
=5x(9+13)
=5x22
=110
脫式計算.300-64×84÷284-1÷3- 1 3 ×8(2 4 5 +0.6÷ 6 35 )×2.
8樓:黑岩の愛
(1)300-64×84÷28,
=300-5276÷28,
=300-192,
=108;
(2)4-1÷3-1 3
×8,=4-1 3
-8 3
,=4-(1 3
+8 3
),=4-3,
=1;(3)(24 5
+0.6÷6
35)×2.4,
=(24 5
+7 2
)×2.4,
=6.3×2.4,
=15.12;
(4)[11 8
-(13
20+0.35)÷11 7
]×3.2,
=[11 8
-1÷11 7
]×3.2,
=[11 8
-7 8
]×3.2,
=2 8
×3.2,
=0.8.
3+56÷0.8-5.7 (3/4×1/6+3/4×5/6)÷3/2簡便計算
9樓:匿名使用者
寶寶你多大了,幾年級,這些題遵循乙個原則,先括號在括號外,先乘除再加減,你試試
10樓:凌月霜丶
3+56÷0.8-5.7
=3+70-5.7
=73-5.7
=67.3
(3/4×1/6+3/4×5/6)÷3/2簡便計算(3/4×1/6+3/4×5/6)÷3/2=3/4*(1/6+5/6)÷3/2
=3/4*1*2/3
=1/2
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