1樓:斯元駒
(1)36×17÷51,
=612÷51,
=12;
(2)48×125,
=(40+8)×125,
=5000+1000,
=6000;
(3)84×184-84×84,
=84×(184-84),
=84×100,
=8400;
(4)10000-(59+62)×21,
=10000-121×21,
=10000-2541,
=7459.
計算下面各題.(能簡算的要簡算)(1)24×12+76×12 (2)87.5÷12.5÷8 (3)(78+34)÷18 (4)9
2樓:強顏歡笑丶炳
(1)24×制1
2+76×12,
=12×(76+24),=12
×100,
=50;
(2)87.5÷12.5÷8,
=87.5÷(12.5×8),
=87.5÷100,
=0.875;
(3(78+3
4)÷18,
=78×8+3
4×8,
=7+6,
=13;
(4)91+91×(2
13-17),
=91+91×2
13-91×17,
=91+14-13,
=92;
(5)2.2×101,
=2.2×(100+1),
=2.2×100+2.2×1,
=220+2.2,
=222.2;
(6)14.6-3.625-6.375,
=14.6-(3.625+6.375),
=14.6-10,
=4.6.
計算下面各題。(能簡算的要簡算) 1/3×5×2/5÷1/3 1/3×1/15+1
3樓:最美晴天小奕
你敢,很高興為您解答:
1、解:
原式=5×2/5×1/3÷1/3
=5×2/5×1/3×3
=2×1
=22、解:
原式=1/3×(1/15+1/5)
=1/3×4/15
=4/45
3、解:
原式=3.7×6/5+1.3×6/5
=(3.7+1.3)×6/5
=5×6/5
=64、解:
原式=3/4-(6/7-1/4)×17/9=(3/4+1/4-7/16)×17/9
=9/16×17/9
17/16
計算下面各題能簡算的要簡便計算.32÷(11.08-1.48)×0.811.1×3.58+11.1×5.42 17 20 -
4樓:star演奏9wf鰔
(1)32÷(11.08-1.48)×0.8,=32÷9.6×0.8,
=10 3
×0.8,
=8 3
;(2)11.1×3.58+11.1×5.42,=11.1×(3.58+5.42),
=11.1×9,
=99.9;
(3)17
20-3 5
+5 6
,=1 4
+5 6
,=13
12;(4)33 5
+711
-3 5
+411
,=(33 5
-3 5
)+(4
11+7
11),
=3+1,=4.
計算下面各題,能簡算的要簡算. 7×125×8 120-20×2+45 35×(32+128÷32) 43×36+36×57 6
5樓:魯步陽冰
(1)7×125×8
=7×(125×8)
=7×1000
=7000;
(2)120-20×2+45
=120-40+45
=80+45
=125;
(3)35×(32+128÷32)
=35×(32+4)
=35×36
=1260;
(4)43×36+36×57
=(43+57)×36
=100×36
=3600;
(5)640÷[4×(16-8)]
=640÷[4×8]
=640÷32
=20;
(6)68×101-68
=68×(101-1)
=68×100
=6800.
計算下面各題,能簡算的要簡算。 (1)3.8x4.2+38x0.58 (2)36[(5/6-2/3
6樓:樂為人師
(1)3.8x4.2+38x0.58
=38x0.42+38x0.58
=38x(0.42+0.58)
=38x1
=38(2)36×[(5/6-2/3)x3]=36×[1/6x3]
=36×1/2
=18(3)1.25x32x2.5
=(1.25x8)x(4x2.5)
=10x10
=100
(4)72000÷125÷8
=72000÷(125x8)
=72000÷1000=72
7樓:匿名使用者
38×(0.42+0.58)=3.8
181.25×4×(8×2.5)=20
72000÷(125×8)=72
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