1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.
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
2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,能簡便計算的要用簡便方法計算. 296+73+104+37 1600÷25÷4 125×54-46×125 50
3樓:憽人戾
(1)296+73+104+37,
=(296+104)+(73+37),
=400+110,
=510;
(2)1600÷25÷4,
=1600÷(25×4),
=1600÷100,
=16;
(3)125×54-46×125,
=125×(54-46),
=125×8,
=1000;
(4)50.34+11.645-42.34,=50.34-42.34+11.645,
=8+11.645,
=19.645;
(5)125×25×32,
=125×25×4×8,
=(125×8)×(25×4),
=1000×100,
=100000;
(6)99+99×99,
=99×(1+99),
=99×100,
=9900.
計算下列各題,要寫出主要計算過程,能簡便的要用簡便方法計算.①113+360÷24-18 &nb...
4樓:手機使用者
①113+360÷24-18
=113+15-18
=128-18
=110;
②bai8.5×du2.8+2.8×1.5=(zhi8.5+1.5)×
dao2.8
=10×2.8
=28;
③(14+29
)×36=14
×36+2
9×36
=9+8
=17;④(回
13+12
)÷答(1-38)
=56÷58
=43.
計算下面各題,能簡算的要用簡便方法計算
80 12 4 3 80 12 3 回4 80 16 64 60 180 20 5 60 90 5 14515.37 2.8 2.2 15.37 2.8 2.2 15.37 5 10.37 19.92 10.35 9.92 19.92 9.92 10.35 10 10.35 20.35 42 4 2...
計算下面各題,能簡便的要簡便計算3 72
1 3.72 5.3 7.28 3.7,3.72 7.28 5.3 3.7 11 9,20 2 7000 125 8,7000 125 8 7000 1000,7 3 1600 600 75 25,1600 8 25,1592 25,1617 4 35 125 16,35 2 125 8 70 10...
計算下面各題,能簡便計算的用簡便方法計算
1 4.82 5.2 0.8 0.6,4.82 6.5 0.6,4.82 3.9,0.92 2 1 2 34 3 5 710,12 320 710,7 20 710,12 3 79 5 11 29 5 11,79 29 511 1 511,511 4 12.3 99,12.3 100 1 12.3 ...