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300道脱式计算及答案是什么?
(1)2.5*32*0.125
=(2.5*4)*(8*0.125)
=10*1
=10
(2)3.5-7+6.5
=3.5+6.5-7
=3
(3)1.2×2.5+0.8×2.5
=2.5(1.2+0.8)
=25
(4)8.9×1.25-0.9×1.25
=1.25(8.9-0.9)
=10
(5)12.5×7.4×0.8
=12.5×0.8×7.4
=74
(6)6.5×9.5+6.5×0.5
=6.5×(9.5+0.5)
=6.5×10
=65
(7)0.35×1.6+0.35×3.4
=0.35*(1.6+3.4)
=0.35*5
=1.75
(8)6.72-3.28-1.72
=6.75-(3.28+1.72)
=6.75-5
=1.75
(9)0.45+6.37+4.55
=0.45+4.55+6.37
=5+6.37
=11.37
(10)28×12.5-12.5×20
=(28-20)*12.5
=8*12.5
=100
(11)23.65-(3.07+3.65)
=23.65-3.65-3.07
=20-3.07
=16.93
(12)(4+0.4×0.25)8×7×1.25
=(4+1)*7*10
=5*7*10
=350
(13)1.65×99+1.65
=1.65*(99+1)
=1.65*100
=165
(14)27.85-(7.85+3.4)
=27.85-7.85+3.4
=20+3.4
=23.4
(15)48×1.25+50×1.25×0.2×8
7.8×9.9+0.78
=7.8*(9.9+0.1)
=7.8*10
=78
(16)4.8×46+4.8×54
=(46+54)*4.8
=100*4.8
=480
(17)673-327-173
=673-(327+173)
=673-500
=173
(18)4.44*2.5
=1.11*(4*2.5)
=1.11*10
=11.1
(19)3.5÷1.4
=(3.5÷0.7)÷(1.4÷0.7)
=5÷2
=2.5
(20)1+2+3+4+5……+99+100
=(1+99)+(2+98)+(3+97)+.+(49+51)+50
=(100÷2-1)*100+50
=4900+50
=4950
62×7.1+2.9,
=440.2+2.9,
=443.1;
4.2×0.25,
=(4+0.2)×0.25,
=4×0.25+0.2×0.25,
=1+0.05,
=1.05;
5.2×4.3+0.8×4.3,
=(5.2+0.8)×4.3,
=6×4.3,
=25.8.
8.5+1.5÷0.25×4,
=8.5+6×4,
=8.5+24,
=32.5.
0.25×0.8+2.5%
=0.2+2.5%,
=0.225;
32×125×2.5,
=4×8×125×2.5,
=8×125×(4×2.5),
=1000×10,
=10000;
94÷(6.84×8.5-31.46÷0.55),
=94÷(58.14-57.2),
=94÷0.94,
=100.
13÷0.4÷2.5,
=13÷(0.4×2.5),
=13÷1,
=13;
1.25×2.5×0.8,
=(1.25×0.8)×2.5,
=1×2.5,
=2.5;
1.5×101-1.5,
=1.5×(101-1),
=1.5×100,
=150;
4.8×101,
=4.8×100+4.8×1,
=480+4.8,
=484.8.
3.25×4.7-7.8,
=15.275-7.8,
=7.475;
0.57+0.43×0.24,
=0.57+0.1032,
=0.6732.
945÷5÷3,
=189÷3,
=63;
152×3÷2,
=456÷2,
=228;
43×12×6,
=516×6,
=3096.
200+25×33,
=200+825,
=1025;
(25+26)×48,
=51×48,
=2448.
576-(290+107),
=576-397,
=179;
649+124-556,
=773-556,
=217.
4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92.
脱式计算288×101-288这道题的答案是什么
288x101-288
=288x(101-1)
=288x100
=28800
六十加255加四十用脱式计算答案是什么
六十加255加四十用脱式计算答案是什么
60+255+40
=60+40+255
=100+255
=355
脱式计算14.5xo.56十o.56一5.5xo.56答案是什么
14.5xo.56十o.56一5.5xo.56
解;脱式计算
=14.5x0.56+1x0.56-5.5x0.56 运用乘法分配率
=(14.5+1-5.5)x0.56
=10x0.56
=5.6
祝学习进步。
那几道计算的答案是什么
题目灰哪去了?
30道“一元一次不等式组"计算题及答案是什么?
66x+17y=3967
25x+y=1200
答案:x=48 y=47
(2) 18x+23y=2303
74x-y=1998
答案:x=27 y=79
(3) 44x+90y=7796
44x+y=3476
答案:x=79 y=48
(4) 76x-66y=4082
30x-y=2940
答案:x=98 y=51
(5) 67x+54y=8546
71x-y=5680
答案:x=80 y=59
(6) 42x-95y=-1410
21x-y=1575
答案:x=75 y=48
(7) 47x-40y=853
34x-y=2006
答案:x=59 y=48
(8) 19x-32y=-1786
75x+y=4950
答案:x=66 y=95
(9) 97x+24y=7202
58x-y=2900
答案:x=50 y=98
(10) 42x+85y=6362
63x-y=1638
答案:x=26 y=62
(11) 85x-92y=-2518
27x-y=486
答案:x=18 y=44
(12) 79x+40y=2419
56x-y=1176
答案:x=21 y=19
(13) 80x-87y=2156
22x-y=880
答案:x=40 y=12
(14) 32x+62y=5134
57x+y=2850
答案:x=50 y=57
(15) 83x-49y=82
59x+y=2183
答案:x=37 y=61
(16) 91x+70y=5845
95x-y=4275
答案:x=45 y=25
(17) 29x+44y=5281
88x-y=3608
答案:x=41 y=93
(18) 25x-95y=-4355
40x-y=2000
答案:x=50 y=59
(19) 54x+68y=3284
78x+y=1404
答案:x=18 y=34
(20) 70x+13y=3520
52x+y=2132
答案:x=41 y=50
(21) 48x-54y=-3186
24x+y=1080
答案:x=45 y=99
(22) 36x+77y=7619
47x-y=799
答案:x=17 y=91
(23) 13x-42y=-2717
31x-y=1333
答案:x=43 y=78
(24) 28x+28y=3332
52x-y=4628
答案:x=89 y=30
(25) 62x-98y=-2564
46x-y=2024
答案:x=44 y=54
(26) 79x-76y=-4388
26x-y=832
答案:x=32 y=91
(27) 63x-40y=-821
42x-y=546
答案:x=13 y=41
(28) 69x-96y=-1209
42x+y=3822
答案:x=91 y=78
(29) 85x+67y=7338
11x+y=308
答案:x=28 y=74
(30) 78x+74y=12928
14x+y=1218
答案:x=87 y=83
1、一元一次不等式:数学名词,用不等号连线,含有个一个未知数,并且含有未知数项的次数都是1的,系数不为0的,左右两边为整式的式子叫做一元一次不等式。
2、概念定义一般用符号“=”连线的式子叫做等式。注意:等式的左右两边是代数式。一般地,用符号“”(或“≥”),“≠”连线的式子叫做不等式。
3、用不等号连线的,含有一个未知数,并且未知数项的次数都是1,系数不为0,左右两边为整式的式子叫做一元一次不等式。
4、等式性质:
(1)等式的两边都加上(或减去)同一个数(或式子),不等号的方向不变。
(2)等式的两边都乘以(或除以)同一个正数,不等号的方向不变。
(3)等式的两边都乘以(或除以)同一个负数,不等号的方向改变。
454的20%怎样计算,答案是什么
454×20%=90.8
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谁有66个脱式计算以及答案
1.3/7 × 49/9 - 4/3
2.8/9 × 15/36 + 1/27
3.12× 5/6 – 2/9 ×3
4.8× 5/4 + 1/4
5.6÷ 3/8 – 3/8 ÷6
6.4/7 × 5/9 + 3/7 × 5/9
7.5/2 -( 3/2 + 4/5 )
8.7/8 + ( 1/8 + 1/9 )
9.9 × 5/6 + 5/6
10.3/4 × 8/9 - 1/3
11.7 × 5/49 + 3/14
12.6 ×( 1/2 + 2/3 )
13.8 × 4/5 + 8 × 11/5
14.31 × 5/6 – 5/6
15.9/7 - ( 2/7 – 10/21 )
16.5/9 × 18 – 14 × 2/7
17.4/5 × 25/16 + 2/3 × 3/4
18.14 × 8/7 – 5/6 × 12/15
19.17/32 – 3/4 × 9/24
20.3 × 2/9 + 1/3
21.5/7 × 3/25 + 3/7
22.3/14 ×× 2/3 + 1/6
23.1/5 × 2/3 + 5/6
24.9/22 + 1/11 ÷ 1/2
25.5/3 × 11/5 + 4/3
26.45 × 2/3 + 1/3 × 15
27.7/19 + 12/19 × 5/6
28.1/4 + 3/4 ÷ 2/3
29.8/7 × 21/16 + 1/2
30.101 × 1/5 – 1/5 × 21
18.68.6×.02脱式计算答案
一、计算。(1)0.6×(2.7-0.9)÷0.24 (2)(9.18÷1.7-5.05)÷0.35 (3)5.4×〔(2.73+1.85)÷2.29〕 (4)〔(3.6+4.64-1.2)÷4〕×0.1 (5)18.5×0.2÷18.5×0.2 (6)0.4×(1+0.2-1+0.2)÷0.16 二、列式计算(1)8.5比2.03的3倍多多少? (2)23.5与10.5的和乘以它们的差,积是多少? (3)50减去6.5与1.8的积,差是多少?(4)4.68除以0.9的商比8.5乘以1.4的积少多少?三、用一个式子将下面四个互有关联的算式连结成综合算式。 1.2×3.6 4.32+17.68 4.09-3.98 0.11÷22 四、在□里填上适当的数(1)〔□-(7.5+8.5)〕×2.5=11 (2)7.5÷〔(2-1.25)×□〕=5
脱式计算(不带答案)
1、475+254+361 2、615+475+125 3、860-168+159
4、465+358-27 5、647-(85+265) 6、476+(65-29)
7、154×8÷16 8、400÷25×75 9、16×25÷16×25
10、552÷69×8 11、600-120÷10 12、(600-120)÷10
13、(466-25×4)÷6 14、(43+32)÷(357-352)
15、138+(27+48)÷25 16、56×19+25×8