65×73+28×65-65. 8000÷125÷24×6. 210×8÷105×125. 450÷90-360÷90.
981+5×9810+49×981. 25×64×125. 56000÷(14000÷16) 45000÷(25×90)
37500÷4÷25. 9600÷25. 125×91÷25. 125×72÷9.
125×38÷19. 2847-399-1601. 285+305-5.
分析:運(yùn)用乘法的運(yùn)算定律和除法、減法的運(yùn)算性質(zhì)進(jìn)行簡(jiǎn)便計(jì)算.
解答:解:(1)65×73+28×65-65,
=65×(73+28-1),
=65×100,
=6500;

(2)8000÷125÷24×6,
=64×6÷24,
=384÷24,
=16;

(3)210×8÷105×125,
=210÷105×(8×125),
=2×1000,
=2000;

(4)450÷90-360÷90,
=(450-360)÷90,
=90÷90,
=1;

(5)981+5×9810+49×981,
=981+50×981+49×981,
=(1+50+49)×981,
=100×981,
=98100;

(6)25×64×125,
=(25×8)×(8×125),
=200×1000,
=200000;

(7)56000÷(14000÷16),
=56000÷875,
=64;

(8)45000÷(25×90),
=45000÷90÷25,
=500÷25,
=20;

(9)37500÷4÷25,
=37500÷(4×25),
=37500÷100,
=375;

(10)960÷25,
=(960×4)÷(25×4),
=3840÷100,
=38.4;

(11)125×91÷25,
=125÷25×91,
=5×91,
=455;

(12)125×72÷9,
=125×8×(9÷9),
=1000×1,
=1000;

(13)125×38÷19,
=125×(38÷19),
=125×2,
=250;

(14)2847-399-1601,
=2847-(399+1601),
=2847-2000,
=847;

(15)285+305-5,
=285+(305-5),
=285+300,
=585.
點(diǎn)評(píng):此題考查目的是熟練掌握整數(shù)的運(yùn)算定律和運(yùn)算性質(zhì),靈活選擇適當(dāng)?shù)姆椒ㄟM(jìn)行簡(jiǎn)便計(jì)算.
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:

(1)72+28×108 (2)36×64-64+64×65 (3)24×125×7
(4)25×(24+8)×125 (5)402×[494÷(102-83)] (6)908-8×(73-46)

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:

30×2= 52×7= 80×6= 100×4= 400×8=
900×5= 40×6= 10×9= 3×8= 10×5=
7×200= 800×6= 80÷4= 240÷6= 360÷9=
108×7= 810÷9= 67+8= 82+7= 104×3=
0×105= 23×3= 64÷2= 2400÷8= 33÷3=
3×400= 840÷2= 12×3= 400÷5= 5400÷9=
180+170= 500-192= 540÷3= 560+80= (25-7)×0=
0÷8= 21×7= 80-90= 660÷6= 88÷8=
48+73= 640÷8= 710-30= 5400÷6= 80×7=
88÷8= 17×3= 16×4= 200×6= 14×5=
200×4= 180÷3= 320÷8= 0÷9= 30×8=
50×3= 360÷6= 86+7= 80÷4= 630÷3=
24×2= 120÷6= 600×4= 210×2= 48÷4=
90-8= 400×5= 31×3= 900×7= 200×9=
33×2= 600×6= 2000×3= 800×7= 123×3=
36÷3= 88÷4= 3×30= 450÷5= 700÷7=
8×6= 42÷7= 18÷3= 24÷3= 5×0×3=
32÷8= 5×6= 54÷4= 9×50= 16+7×2=
81÷9= 10×3= 48÷8= 20×7= 32÷4+13=
9×4= 6×500= 300×4= 900×2= (5+25)×4=
37×6= 45×3= 64÷2= 23×4= 19×3=
36×2= 47×3= 48×2= 15×2= 39×4=
300÷60= 90÷6= 72÷8= 910÷7= 75-28=
60+180= 420-80= 68÷4= 280+60= 28+25=
360÷40= 540÷60= 30÷3= 270+50= 14×7=
62+18= 15×6= 420÷70= 95÷5= 750-300=
16×5= 92-48= 21×40= 720÷80= 65÷13=
17×4= 68÷17= 70÷14= 90÷15= 80÷16=
72-24= 900÷18= 750÷25= 84÷21= 20×40=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:閱讀理解

4.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=
6×3.4= 0.62-0.32= 1.4×0.5= 0.75×100=
0.02×0.5= 3.6÷0.3= 6.3÷7= 5.6÷100=
0.75÷0.25= 0.125×8= 4.8÷0.3= 0.96÷2=
0.56÷28= 0.36÷0.4= 0.64÷0.8= 0.72÷3.6=
3.6÷24= 0.8×1.1= 7.2+12.8= 46.7-3.8=
12.8÷4= 5.2÷13= 12.5÷5= 1.64÷41=
10÷20= 24÷15= 8.65×10= 0.35×0.6=
3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=
2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=
4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=
0.56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=
7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=
1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=
0.22×102= 9.6÷0.8= 5×0.24= 4.5-0.05=
3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=
4.8×0.5= 2.8+4.2= 0.84÷2.1= 5÷0.25=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
0.56÷0.8= 7.4-2.8= 0.18÷0.2= 0.16÷8=
4.5×0.02= 8+7.2= 1.2×30= 0.012×0.2=
7.3×0.3= 9÷6= 3.6÷0.12= 7.8÷0.6=
2÷5= 4.5+5= 0.3÷0.6= 0.96÷0.2=
10.5×0.4= 7.3+0.27= 8×0.125= 0.54÷0.6=
0.61+0.39= 0.56÷28= 10÷20= 4.08÷0.4=
11-9.4= 0.8×0.11= 0.72+12.8= 5.6÷0.01=
2.3×100= 0.75×100= 0.108÷2= 10.8÷9=
0.7÷0.8= 16-5.07= 4.2×0.4= 0.72×6=
12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=
0.41+3.7= 0.02×0.5= 7.2-0.8= 1.4×0.5=
84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=
1.75+32.5= 16-5.07= 5.2÷13= 1.64÷41=
1.02×0.2= 0.26×0.3= 8.4×0.02= 1.29×6=
0.8×0.05= 12.6÷0.03= 8.71÷0.1= 21÷0.21=
0.8×0.13= 0.34÷17= 8.08÷0.4= 0.5×2.2=
1.24÷4= 3.27+0.63= 5.02×0.3= 0.3×0.5=
6.4÷4= 7.2÷1.8= 0.7÷0.35= 0.72÷1.44=
0.48÷0.04= 1.25÷2.5= 5.5+55= 16.8÷8=
0.54+2.2= 3.5-0.05= 2÷0.02= 0.25×40=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
46.5+52.5= 0.45×102= 1.25×88= 2.64+3.85+1.54=
8×1.25= 5.6÷3.5= 4.2÷0.7÷6= 0.4×8.6×25=
0.27÷0.3= 2.5×101= 0.65×101-0.65= 2.6×7÷2.6×7=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:解答題

65×73+28×65-65.8000÷125÷24×6.210×8÷105×125.450÷90-360÷90.
981+5×9810+49×981.25×64×125.56000÷(14000÷16)45000÷(25×90)
37500÷4÷25.9600÷25.125×91÷25.125×72÷9.
125×38÷19.2847-399-1601.285+305-5.

查看答案和解析>>

同步練習(xí)冊(cè)答案