四年级递等式计算150道 速度因为是暑假作业~要有答案啊~~~
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四年级递等式计算150道 速度因为是暑假作业~要有答案啊~~~
四年级递等式计算150道 速度因为是暑假作业~
要有答案啊~~~
四年级递等式计算150道 速度因为是暑假作业~要有答案啊~~~
(720+270)÷55-120÷24
=990÷55-120÷(12×2)
=990÷110×2-120÷12÷2
=9×2-10÷2
=18-5
=13
(63+480÷16)-29
=(63+30×16÷16)-29
=63+30-30+1
=64
13.67-2.97+25.8
=13.67-3+0.03+25.8
=10.67+0.03+25.8
=10.7+25.8
=36.5
7.06-2.78+13.78
=7.06+13.78-2.78
=7.06-(13.78-2.78)
=7.06+11
=18.06
0.64×25×7.8+2.2
=0.16*4*25*7.8+2.2
=0.16*100*7.8+2.2
=16*7.8+2.2
=127
2÷2.5+2.5÷2
=4/5+5/4
=2.05
194-64.8÷1.8×0.9
=194-36*0.9
=194-32.4
=161.6
36.72÷4.25×9.9
=8.64*9.9
=85.536
5180-705×6
=5180-4230
=950
24÷2.4-2.5×0.8
=10-2
=8
(4121+2389)÷7
=6510/7
=930
671×15-974
=10065-974
=9091
469×12+1492
=5628+1492
=7120
405×(3213-3189)
=405*24
=9720
1)、0.36x1.5x0.4=0.4x5x0.36x0.3=2x0.108=0.216
2)、0.05x3.2x40=0.05x40x3.2=2x3.2=6.4
3)、3.78x0.5-0.65=3.78x0.5-1.3x0.5=(3.78-1.3)x0.5=2.48x0.5=1.24
4)、13.4x0.24+3.98=13.4x0.6x0.4+3.98=8.04x0.4+3.98=3.216+3.98=7.196
5)、3.8x41-3.8=3.8x(41-1)=3.8x40=152
6)、0.3x2.5x0.4=0.3x1=0.3
7)、0.78x101=0.78x100+0.78x1=78+0.78=78.78
8)、1.2x2.5+0.8x2.5=(1.2+0.8)x2.5=2x2.5=5
9)、9.8x25=10x25-0.2x25=250-5=245
10)、0.8x630x0.125=0.8x0.125x630=0.1x630=63
11)、198x0.51=200x0.51-2x0.51=102-1.02=100.98
12)、2.5x3.7+6.3x2.5=(3.7+6.3)x2.5=10x2.5=25
(45-17)+(9-3)=28+6=34,
(45-17)+(9-6)=28+3=31,
(45-18)+(9-3)=27+6=33
(45-18)+(9-6)=27+3=30,
(45-27)+(9-3)=18+6=24,
(45-27)+(9-6)=18+3=21
(45-28)+(9-3)=17+6=23,
(45-28)+(9-6)=17+3=20,
(46-17)+(8-3)=29+5=34
(46-17)+(8-5)=29+3=32,
(46-19)+(8-3)=27+5=32,
(46-19)+(8-5)=27+3=30
(46-27)+(8-3)=19+5=24,
(46-27)+(8-5)=19+3=22,
(46-29)+(8-3)=17+5=22
(46-29)+(8-5)=17+3=20,
(54-16)+(9-2)=38+7=45,
(54-16)+(9-7)=38+2=40
(54-18)+(9-2)=36+7=43,
(54-18)+(9-7)=36+2=38,
(54-36)+(9-2)=18+7=25
(54-36)+(9-7)=18+2=20,
(54-38)+(9-2)=16+7=23,
(54-38)+(9-7)=16+2=18
(57-18)+(6-2)=39+4=43,
(57-18)+(6-4)=39+2=41,
(57-19)+(6-2)=38+4=42
(57-19)+(6-4)=38+2=40,
(57-38)+(6-2)=19+4=23,
(57-38)+(6-4)=19+2=21
(57-39)+(6-2)=18+4=22,
(57-39)+(6-4)=18+2=20,
(63-15)+(9-2)=48+7=55
(63-15)+(9-7)=48+2=50,
(63-18)+(9-2)=45+7=52,
(63-18)+(9-7)=45+2=47
(63-45)+(9-2)=18+7=25,
(63-45)+(9-7)=18+2=20,
(63-48)+(9-2)=15+7=22
(63-48)+(9-7)=15+2=17,
(64-25)+(8-1)=39+7=46,
(64-25)+(8-7)=39+1=40
(64-29)+(8-1)=35+7=42,
(64-29)+(8-7)=35+1=36,
(64-35)+(8-1)=29+7=36
(64-35)+(8-7)=29+1=30,
(64-39)+(8-1)=25+7=32,
(64-39)+(8-7)=25+1=26
(67-18)+(5-2)=49+3=52,
(67-18)+(5-3)=49+2=51,
(67-19)+(5-2)=48+3=51
(67-19)+(5-3)=48+2=50,
(67-28)+(5-1)=39+4=43,
(67-28)+(5-4)=39+1=40
(67-29)+(5-1)=38+4=42,
(67-29)+(5-4)=38+1=39,
(67-38)+(5-1)=29+4=33
(67-38)+(5-4)=29+1=30,
(67-39)+(5-1)=28+4=32,
(67-39)+(5-4)=28+1=29
(67-48)+(5-2)=19+3=22,
(67-48)+(5-3)=19+2=21,
(67-49)+(5-2)=18+3=21
(67-49)+(5-3)=18+2=20,
(72-14)+(9-3)=58+6=64,
(72-14)+(9-6)=58+3=61
(72-18)+(9-3)=54+6=60,
(72-18)+(9-6)=54+3=57,
(72-54)+(9-3)=18+6=24
(72-54)+(9-6)=18+3=21,
(72-58)+(9-3)=14+6=20,
(72-58)+(9-6)=14+3=17
(73-14)+(8-2)=59+6=65,
(73-14)+(8-6)=59+2=61,
(73-19)+(8-2)=54+6=60
(73-19)+(8-6)=54+2=56,
(73-54)+(8-2)=19+6=25,
(73-54)+(8-6)=19+2=21
(73-59)+(8-2)=14+6=20,
(73-59)+(8-6)=14+2=16,
(81-24)+(9-3)=57+6=63
(81-24)+(9-6)=57+3=60,
(81-27)+(9-3)=54+6=60,
(81-27)+(9-6)=54+3=57
(81-35)+(9-2)=46+7=53,
(81-35)+(9-7)=46+2=48,
(81-36)+(9-2)=45+7=52
(81-36)+(9-7)=45+2=47,
(81-45)+(9-2)=36+7=43,
(81-45)+(9-7)=36+2=38
(81-46)+(9-2)=35+7=42,
(81-46)+(9-7)=35+2=37,
(81-54)+(9-3)=27+6=33
(81-54)+(9-6)=27+3=30,
(81-57)+(9-3)=24+6=30,
(81-57)+(9-6)=24+3=27
(83-14)+(7-2)=69+5=74,
(83-14)+(7-5)=69+2=71,
(83-19)+(7-2)=64+5=69
(83-19)+(7-5)=64+2=66,
(83-24)+(7-1)=59+6=65,
(83-24)+(7-6)=59+1=60
(83-29)+(7-1)=54+6=60,
(83-29)+(7-6)=54+1=55,
(83-54)+(7-1)=29+6=35
(83-54)+(7-6)=29+1=30,
(83-59)+(7-1)=24+6=30,
(83-59)+(7-6)=24+1=25
(83-64)+(7-2)=19+5=24,
(83-64)+(7-5)=19+2=21,
(83-69)+(7-2)=14+5=19
(83-69)+(7-5)=14+2=16,
(86-27)+(4-1)=59+3=62,
(86-27)+(4-3)=59+1=60
(86-29)+(4-1)=57+3=60,
(86-29)+(4-3)=57+1=58,
(86-57)+(4-1)=29+3=32
(86-57)+(4-3)=29+1=30,
(86-59)+(4-1)=27+3=30,
(86-59)+(4-3)=27+1=28
(91-24)+(8-3)=67+5=72,
(91-24)+(8-5)=67+3=70,
(91-27)+(8-3)=64+5=69
(91-27)+(8-5)=64+3=67,
(91-34)+(8-2)=57+6=63,
(91-34)+(8-6)=57+2=59
(91-37)+(8-2)=54+6=60,
(91-37)+(8-6)=54+2=56,
(91-54)+(8-2)=37+6=43
(91-54)+(8-6)=37+2=39,
(91-57)+(8-2)=34+6=40,
(91-57)+(8-6)=34+2=36
(91-64)+(8-3)=27+5=32,
(91-64)+(8-5)=27+3=30,
(91-67)+(8-3)=24+5=29
(91-67)+(8-5)=24+3=27,
(92-34)+(7-1)=58+6=64,
(92-34)+(7-6)=58+1=59
(92-38)+(7-1)=54+6=60,
(92-38)+(7-6)=54+1=55,
(92-54)+(7-1)=38+6=44
(92-54)+(7-6)=38+1=39,
(92-58)+(7-1)=34+6=40,
(92-58)+(7-6)=34+1=35
(93-15)+(6-2)=78+4=82,
(93-15)+(6-4)=78+2=80,
(93-18)+(6-2)=75+4=79
(93-18)+(6-4)=75+2=77,
(93-75)+(6-2)=18+4=22,
(93-75)+(6-4)=18+2=20
(93-78)+(6-2)=15+4=19,
(93-78)+(6-4)=15+2=17,
(94-16)+(5-2)=78+3=81
(94-16)+(5-3)=78+2=80,
(94-18)+(5-2)=76+3=79,
(94-18)+(5-3)=76+2=78
(94-76)+(5-2)=18+3=21,
(94-76)+(5-3)=18+2=20,
(94-78)+(5-2)=16+3=19
(94-78)+(5-3)=16+2=18,
(95-27)+(4-1)=68+3=71,
(95-27)+(4-3)=68+1=69
(95-28)+(4-1)=67+3=70,
(95-28)+(4-3)=67+1=68,
(95-67)+(4-1)=28+3=31
(95-67)+(4-3)=28+1=29,
(95-68)+(4-1)=27+3=30,
(95-68)+(4-3)=27+1=28
175-75÷25 68+35×13 725-(125+237)
(114+166)÷35 432÷(9×8) 189-60+40
三、简便计算。
216+305 25×32 47+236+64
6×(15×9) 402+359 43+78+122+257
25×(26×4) 25×44 354+(229+46)
(1)9.26-4.38...
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175-75÷25 68+35×13 725-(125+237)
(114+166)÷35 432÷(9×8) 189-60+40
三、简便计算。
216+305 25×32 47+236+64
6×(15×9) 402+359 43+78+122+257
25×(26×4) 25×44 354+(229+46)
(1)9.26-4.38-2.62
(2)9.26-(4.38+2.26)
(3)9.26-(4.38-2.74
(1)4.75-9.64+8.25-1.36
(2)14.529+(2.471-3)
(3)38.68-(4.7-2.32)
415-176-24 8.29+3.7+0.71+6.3
125×89×8 428 ×78+572×78
3. 递等式计算。
15×27-3000÷25 216+64×42÷28 (324-285) ×12÷26
(1)60506-19460÷35
(2)23072÷412×65
(3)184×38+116×38-11300
(4)(79691-46354)÷629
(5)325÷13×(266-250)
(1)1.9÷(43.26+6.74)×3 (2)17.8+6.3÷(3.2-1.6)
(3)0.4×(3.2-0.8)÷1.2 (4) 5×[(3.2+4.06)÷6.05]
(5)68-(188.3-107.3)÷0.81÷0.9 (6)20.5+1.4×4÷0.4
45-30÷5=
200÷(25×4)=
40+60×2=
0×140+60=
一、计算并验算各题.
1.100.485+72.68
4.40.043-12.87
二、用简便方法计算.
1.125×560
2.45×71+29×45
3.13.6×8×125
4.13.6-4.25-5.75+6.4
.18.3-6.25-3.75+12.7
2.64×101
3.25×125×40×8
4.73×18+83×73
五、计算下面各题.
1.0.6+0.94-0.208
2.24.63-(4.63-1.85)
3.(64-224÷14)×12
4.1204×(38+405÷27)
①3871-(1080-740)×7 ②5175÷207+102×9
③0.9+1.08+0.92+0.1 ④13.59-6.91-0.09
⑤983×(3.8+2.2)+0.237×1000
⑥0.8×(35+65)×5÷100
⑦30-[17.8+(6.2+38÷10)]
1.10-5.4-4.6= 2.6-(2.4+2.2)x6
26×39+61×26
356×9-56×9
52×76+47×76+76
134×56-134+45×134
小数乘除法简便计算专项练习
1.25×32×0.25 4.7×1.25×1.6 2.5×(13×4)
1.25×88 1.25×64×0.25 4.6×0.35+4.6×0.65
0.95×8.6-7.6×0.95 2.4×1.87-2.4×0.87 4.18+4.18×99
2.55×1.5+1.5+6.45×1.5 2.95×101-2.95 2.4-2.4×0.5
3.2×10.1 0.52×105 0.85×99 99×4.3
二、脱式计算。
175-75÷25 68+35×13 725-(125+237)
(114+166)÷35 432÷(9×8) 189-60+40
三、简便计算。
216+305 25×32 47+236+64
6×(15×9) 402+359 43+78+122+257
25×(26×4) 25×44 354+(229+46)
1000―7200÷8
1242÷(103―49)
4032÷(36×2)
75×4+630 376+280÷70
9×60-320 6400÷80-64
2936÷4×4
(4280+3265)÷5
576÷3÷4
2427÷3+1995
8323÷4=
3002÷2=
234×3-574÷7 4326÷(61-58)
1. 84÷7+35×4
2. 540÷9-300÷6
3. 480÷8+320÷4
4. 120×3-90×2
5. 30×4+60×5
6. 488÷4-23×4
48÷8×7
3600-458+1204
493+25×7
305×(301-297)
35×8+43×5
650÷5-328÷4
四年级简便计算题
184+98 695+202 864-199 738-301
(加减法接近整百数的简算)
380+476+120 (569+468)+(432+131)
(加法交换律和结合律的运用)
256-147-53 373-129+29 189-(89+74) 456-(256-36)
(减法的简算,重点:运算符号变化的处理)
28×4×25 125×32×25 9×72×125
(乘法交换律和结合律的运用,重点:一个因数分成两个因数的处理)
720÷16÷5 630÷42
(除法的简算)
102×35 98×42
(乘法接近整百数的简算)
26×39+61×26 356×9-56×9
99×55+55 78×101-78
52×76+47×76+76 134×56-134+45×134
(乘法分配律的运用)
48×52×2-4×48
25×23×(40+4)
999×999+1999
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