1樓:手機使用者
(1)480÷(144-960÷8)
=480÷(bai144-120)
=480÷24
=20;du
(2)99×
zhi199+199
=199×(99+1)
=199×100
=19900;
(3)25×32×125
=25×4×(8×125)
=100×1000
=100000;
(7)(dao768-68×11)÷回19=(768-748)÷19
=20÷19
=2019.答
脫式計算.(能用簡便方法計算的要用簡便方法計算) (1)13.6×3-40.6÷2 (2
2樓:風子
(bai1)13.6×
du3-40.6÷2,
zhi=40.8-20.3,
=20.5;dao
(2)99×0.75+1 4
×99 ,
=99×(0.75+0.25),
=99×1,
=99;
(3)(5 6
-5 8
)×24 ,
=5 6
×24-5 8
×24,
=20-15,
=5;(4)121×1001
121,
=121×(100+1
121),
=121×100+121×1
121,
=12100+1,
=12101;
(5)15÷3-7×(1 7
+1 21
) ,=15÷3-7×4
21,=5-11 3
,=32 3
;(6)246
23÷6-1
23,=41
23-1
23,=4.
計算下面各題.(能簡便的要用簡便方法計算)2.3+3.91÷(22-19.7)21.6÷[64.8-(48.6-2.7×2)]0.25×0
3樓:手機使用者
(1)2.3+3.91÷(22-19.7)=2.3+3.91÷2.3
=2.3+1.7
=4(2)21.6÷[64.8-(48.
6-2.7×2)]=21.6÷[64.
8-(48.6-5.4)]=21.
6÷[64.8-43.2]
=21.6÷21.6
=1(3)0.25×0.03×4
=(0.25×4)×0.03
=1×0.03
=0.03
0.13×3.89+0.13×5.11
=0.13×(3.89+5.11)
=0.13×9
=1.17
(5)10.1×87
=(10+0.1)×87
=10×87+0.1×87
=870+8.7
=878.7
計算下面各題.(能簡便的要用簡便方法計算) 332+68÷4 (574-442)÷12 24×125 114+48+86+52 469
4樓:吾陽珈藍
(1)332+68÷4,
=332+17,
=349;
(2)(574-442)÷12,
=132÷12,
=11;
(3)24×125,
=3×8×125,
=3×(8×125),
=3×1000,
=3000;
(4)114+48+86+52,
=(114+86)+(48+52),
=200+100,
=300;
(5)469×5×2,
=469×(5×2),
=469×10,
=4690;
(6)480÷15÷4,
=480÷(15×4),
=480÷60,=8.
用簡便方法計算下面各題。 1.3200÷4÷25 2.162×35-35×2 3.32×99+32
5樓:匿名使用者
1.3200÷4÷25
=3200÷(4x25)
=3200÷100=32
6樓:匿名使用者
3200÷4÷25
=3200÷(4x25)
=3200÷100
=32162×
內35-35×2
=(162-2)×容35
=160×5×7
=800×7
=5600
32×99+32
=32×(99+1)
=32×100
=3200
45×101-45
=45×(101-1)
=45×100
=4500
48×125
=6×(8×125)
=6×1000
=6000
7樓:小學數學崔老師
1.3200÷4÷25
=3200÷(4×
25)=3200÷100
=322.162×35-35×2
=(162-2)×35
=160×35
=5600
3.32×99+32
=32×(99+1)
=32×100
=3200
4.45×101-45
=45×(101-1)
=45×100
=4500
5.48×125
=6×8×125
=6×(8×125)
=6×1000
=6000
8樓:路人__黎
1、=3200÷dao(4×
25)=3200÷100=32
2、內=35×容(162-2)
=35×160=5600
3、=32×(99+1)
=32×100=3200
4、=45×(101-1)
=45×100=4500
5、=6×8×125
=6×1000=6000
遞等式計算,寫出必要的計算過程,能簡便計算的用簡便方法計算:(1)7.06×2.4-5.7 (2)5.4×99+5.4
9樓:百度使用者
(1)7.06×
2.4-5.7,
=16.944-5.7,
=11.244;
(2)5.4×99+5.4,
=5.4×(99+1),
=5.4×100,
=540;
(3)9.6×72+9.6×28,
=9.6×(72+28),
=9.6×100,
=960;
(4)(1.25×2.5)×4,
=1.25×(2.5×4),
=1.25×10,
=12.5;
(5)10.4+72×0.81,
=10.4+58.32,
=68.72;
(6)11×0.6×0.4,
=6.6×0.4,
=2.64;
(7)(12.8+4.99)÷0.2,
=17.79÷0.2,
=88.95;
(8)1.25×8+2.5×4.4,
=10+2.5×0.4×11,
=10+11,
=21.
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