四年级口算题450道？要求有答案。 450道口算题带答案的。。。。。。。。。。急

\u56db\u5e74\u7ea7\u53e3\u7b97\u9898450\u5230\u8981\u6c42\u6709\u7b54\u6848

90\u00f730=3 640\u00f720=32 92\uff0d58=34 26\uff0b54=80 1400\u00d75=7000
420\u00f770=6 60\u00f720=3 68\u00f74=17 450\u00f750=9
370\u00f710=37 640\u00f780=8 15\u00d75=75 23\u00d73=69
12\u00d710=120 480\u00f780=6 16\u00d75=80 27\u00d73= 81
90\u00f715= 6 48\u00f74=12 630\u00f770=9 12\u00d78=96
60\u00f730= 2 24\u00d720=480 32\u00d73=96 30\u00f7 6= 5
480\u00f780=6 600\uff0b40=200 150\u00f750=3 630\u00f770=9
50\u00f75=10 15\u00d76=90 300\u00f760=5 16\u00d73= 48
70\u00f75=14 36\u00f72=18 2\u00d745=90 13\u00d74= 52
87+13=100 39+61=100 567+299= 866 15\u00d72= 30
327\uff0d198=127 4\u00d75=20 18\u00d735=630 32\u00d725= 800
4500\u00f7900=5 70+90=160 4800\u00f740=12 14\u00d7201=2814
80\u00f716=5 420\u00f720= 21 2500\u00f750=50 16\u00d75= 80
32\u00d720= 640 67\u00d74=268 40\u00d79=360 240\u00f740=6
360\u00f760=6 87\u00f73=29 25\u00d74=100 696\u00f73= 232
125\u00d78=1000 8\u00d725=200 80\u00f720=4 4\u00d750=200
20\u00d72= 40 300\u00d76= 1800 120\u00d73 = 360 420\u00d720 =8400
16\u00d770= 1120 150\u00d720= 3000 60\u00f730= 2 80\u00f720=4
240\u00f740 =6 210\u00f770=3 400\u00f750=8 1000\u00f7100=10
25\u00d740=1000 125\u00d78=1000 300\u00d7330=99000 3\u00d71400=4200 80\u00f740=2
600\u00f730=20 400\u00f780=5 140\u00d7300=4200 8800\u00f740=220
9600\u00f7800=12 750\uff0d290=460 5\u00d7490=2450 760\u00d720=15200
750\u00f750=15 37\u00d7200=7400 660\u00f720=33 8600\uff0d4200= 4400
210\u00f73=70 40\u00f75= 8 160\u00f740= 4 350\u00f770=5

17\u00d740\uff1d680, 100\uff0d63\uff1d37, 3.2\uff0b1.68\uff1d4.88, 2.8\u00d70.4\uff1d 1.12
14\uff0d7.4\uff1d6.6, 1.92\u00f70.04\uff1d48, 0.32\u00d7500\uff1d160, 0.65\uff0b4.35\uff1d 5
10\uff0d5.4\uff1d4.6, 4\u00f720\uff1d0.2, 3.5\u00d7200\uff1d700, 1.5\uff0d0.06\uff1d1.44
0.75\u00f715\uff1d0.05, 0.4\u00d70.8\uff1d0.32, 4\u00d70.25\uff1d1, 0.36\uff0b1.54\uff1d2
1.01\u00d799\uff1d99.99, 420\u00f735\uff1d12, 25\u00d712\uff1d300, 135\u00f70.5\uff1d270
3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4
3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5
0.51\u00f717\uff1d0.03, 32.8\uff0b19\uff1d51.8, 5.2\u00f71.3\uff1d4, 1.6\u00d70.4\uff1d 0.64
4.9\u00d70.7\uff1d3.43, 1\u00f75\uff1d0.2, 6\u00f712\uff1d0.5, 0.87\uff0d0.49\uff1d0.38
1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)
2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)
3.8+2-8+2
4.25*4/25*4
5.7.26-(5.26-1.5)
6.286+198
7.314-202
8.526+301
9.223-99
10.6.25+3.85-2.125+3.875
11.9-2456*21
12.0.5/11.5-4*2.75
13.1/2\u00d73/5
14.3.375+5.75+2.25+6.625
15.1001\uff0d9036\u00f718
16.3.8\u00d75.25+14.5
17.2.1*4.3+5.7*2.1
18.30\u00d71/3
19.102*45-328
20.2/3\u00d712
21.2.8*3.1+17.6/8
22.3/5\u00d75/6
23.(50-12.5)/2.5
24.2/5\u00d71/3
25.6110*47+639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7\u00d71/5
29.3.375*0.97+0.97*6.625
30.25\u00d74/5
31.6.54+2.4+3.46+0.6
32.5/6-1/2
33.95.6*1.8+95.6*8.2
34.1/2\u00d71/5
35.600-420/12
36.344/3.6-5.4*0.25
37.16/2+30/2+90/6
38.3001-1998.
39.5000-105*34
40.0.15/0.25+0.75*1.2
41.(1/2+1/3+1/4)*0.24
42.(25+4)*4
43.300-4263/21
44.0.81/0.25+5.96
45.403\u00f713\u00d727
46.1.5\u00d74.2\uff0d0.75\u00f70.25
47.3.27\u00d74 +3.27\u00d75.7
48.\uff081.2+ 1.8\uff09\u00d74.51025\uff0d768\u00f732
49.0.25\u00d780\uff0d0.45\u00f70.9
50.1025\uff0d768\u00f732
51.0.25*2.69*4
52.2348+275*16
53.2/9*15/8-1/12*9/5
54.2.4+2.4*(5.375-3.375)
55.645-45*12
56.0.15+1.2/0.24-0.45
57.3.75-(2.35+0.25/1.25)
58.76*1/4+23*25/100+0.25
59.10-2.87-7.13
60.0.96+9.6*9.9
61.7.5-5.7*1/3
62.12.37-3.25-6.75
63.16*6.8+2.2*16+16
64.401*19+284
65.58.7-16.65/3.7
66.0.4*4.7*2.5+(2.3+5.3)
67.9.31-1.125-7.875
68.640+128*45
69.8.2*1.6-0.336/4.2
70.400*(0.62+0.08)


2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18


123+25=148 123-35=88 56\u00d77=392 135\u00f75=27
248+89=337 ... 146-23=123 ... 155\u00d75=775 ... 456-12=38...
456+45=501 ...546-457=89 ... 45\u00d710=451 ... 564-12=47...
879+54=933 ...896-546=350 ...56\u00d712=672.... 45-5=9...
457+456=913...




\u8131\u5f0f\u8ba1\u7b97
30.8\u00f7[14\uff0d(9.85\uff0b1.07)]
[60\uff0d(9.5\uff0b28.9)]\u00f70.18
2.881\u00f70.43\uff0d0.24\u00d73.5
20\u00d7[(2.44\uff0d1.8)\u00f70.4\uff0b0.15]
28-(3.4+1.25\u00d72.4)
2.55\u00d77.1+2.45\u00d77.1
777\u00d79+1111\u00d73
0.8\u00d7\u301415.5-(3.21+5.79)\u3015
\uff0831.8+3.2\u00d74\uff09\u00f75
31.5\u00d74\u00f7(6+3)
0.64\u00d725\u00d77.8+2.2
2\u00f72.5+2.5\u00f72
194\uff0d64.8\u00f71.8\u00d70.9
36.72\u00f74.25\u00d79.9
5180\uff0d705\u00d76
24\u00f72.4\uff0d2.5\u00d70.8
(4121+2389)\u00f77
671\u00d715-974
469\u00d712+1492
405\u00d7(3213-3189)
3.416\u00f7\uff080.016\u00d735\uff09
0.8\u00d7[(10\uff0d6.76)\u00f71.2]
19.4\u00d76.1\u00d72.3
5.67\u00d70.2-0.62
18.1\u00d70.92+3.93
0.0430.24+0.875
0.4\u00d70.7\u00d70.25
0.75\u00d7102 100-56.23
0.78+5.436+1
4.07\u00d70.86+9.12.5
30.8\u00f7[14\uff0d(9.85\uff0b1.07)]
[60\uff0d(9.5\uff0b28.9)]\u00f70.18
2.881\u00f70.43\uff0d0.24\u00d73.5
20\u00d7[(2.44\uff0d1.8)\u00f70.4\uff0b0.15]
28-(3.4+1.25\u00d72.4)
2.55\u00d77.1+2.45\u00d77.1
777\u00d79+1111\u00d73
0.8\u00d7\u301415.5-(3.21+5.79)\u3015
\uff0831.8+3.2\u00d74\uff09\u00f75
31.5\u00d74\u00f7(6+3)
0.64\u00d725\u00d77.8+2.2
2\u00f72.5+2.5\u00f72
194\uff0d64.8\u00f71.8\u00d70.9
36.72\u00f74.25\u00d79.9
5180\uff0d705\u00d76
24\u00f72.4\uff0d2.5\u00d70.8
(4121+2389)\u00f77
671\u00d715-974
469\u00d712+1492
405\u00d7(3213-3189)
3.416\u00f7\uff080.016\u00d735\uff09
0.8\u00d7[(10\uff0d6.76)\u00f71.2]
19.4\u00d76.1\u00d72.3 5.67\u00d70.2-0.62

18.1\u00d70.92+3.93 0.0430.24+0.875

0.4\u00d70.7\u00d70.25 0.75\u00d7102 100-56.23

0.78+5.436+1 4.07\u00d70.86+9.12.5





\u7b80\u7b97
\u662f\u4e58\u53f7 /\u662f\u9664\u53f7
0.3*2.5*0.4
50*0.13*0.2
0.8*630*0.125
0.78*101
1.5*102
9.8*25
1.2*2.5+0.8*2.5
1.25*0.7*0.8
0.038*5*2.1
3.8+4.5+6.2
93/0.31/3
3.25\uff0d0.84-0.16
88*0.25*4
2.8*3.6+1.4*2.8
63*10.1
\uff083.2+0.128\uff09/0.8
9.83*1.5+6.17*1.5
10.1*87
312*4+188*4
0.135*500*0.2
6.3+0.84+3.7+8.16
18.75-0.43-4.57
0.25*0.03*4
13.7*0.25*8
2.65*1.7+1.35*1.7
32.8+5.6+7.2
\uff082.5+0.25\uff09*0.4
8*\uff082.5*0.25\uff09
8.4*0.2+1.6*0.2
1.25*0.8*0.5
\uff081.5+0.25\uff09*0.4
1.2*0.4+1.3*0.4





\u65b9\u7a0b
9+6x=14
x+9x=4+7
2x+9=17
8-4x=6
6x-7=12
7x-9=8
x-56=1
8-7x=1
x-30=12
6x-21=21
6x-3=6
9x=18
4x-18=13
5x+9=11
6-2x=11
x+4+8=23
7x-12=8
X-5.7=2.15
15 5X-2X=18
3X 0.7=5
x\uff0b13\uff1d33
3 \uff0d 5x\uff1d80
1.8 +6x\uff1d54
6.7x \uff0d60.3\uff1d6.7
9 \uff0b4x \uff1d40
2x+8=16
3.5\u00d72= 4.2 x
26\u00d71.5= 2x
0.5\u00d716\u201516\u00d70.2=4x
9.25\uff0dX=0.403
16.9\u00f7X=0.3
X\u00f70.5=2.6
3\uff0d5x\uff1d80
1.8-6x\uff1d54
6.7x\uff0d60.3\uff1d6.7
9 \uff0b4x\uff1d40
0.2x\uff0d0.4\uff0b0.5\uff1d3.7
9.4x\uff0d0.4x\uff1d16.2
12\uff0d4x\uff1d20
1/3x\uff0b5/6x\uff1d1.4
12x\uff0b34x=1
18x\uff0d14x=12
23 x\uff0d5\u00d714=14
12\uff0b34x=56
22\uff0d14x=12
23x-14x=14
x\uff0b14x=65
23x=14x\uff0b14
30x12x\uff0d14x=1
x-0.7x=3.6

1+1=②420÷70=6 60÷20=3 68÷4=17 450÷50=9

1. 90÷30=3 640÷20=32 92－58=34 26＋54=80 1400×5=7000

2. 420÷70=6 60÷20=3 68÷4=17 450÷50=9

3. 370÷10=37 640÷80=8 15×5=75 23×3=69

4. 12×10=120 480÷80=6 16×5=80 27×3= 81

5. 90÷15= 6 48÷4=12 630÷70=9 12×8=96

6. 60÷30= 2 24×20=480 32×3=96 30÷ 6= 5

7. 480÷80=6 600＋40=200 150÷50=3 630÷70=9

8. 50÷5=10 15×6=90 300÷60=5 16×3= 48

9. 87+13=100 39+61=100 567+299= 866 15×2= 30

10. 327－198=127 4×5=20 18×35=630 32×25= 800

11. 4500÷900=5 70+90=160 4800÷40=12 14×201=2814

12. 80÷16=5 420÷20= 21 2500÷50=50 16×5= 80

13. 32×20= 640 67×4=268 40×9=360 240÷40=6 70÷5=14 36÷2=18 2×45=90 13×4=

14. 52 360÷60=6 87÷3=29 25×4=100 696÷3= 232

15. 125×8=1000 8×25=200 80÷20=4 4×50=200
    

不够450道选择题

我觉的不该有答案 有些孩子会抄

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鎬ユ眰500閬撳皬瀛鍥涘勾绾鏁板鍙ｇ畻棰,甯︾瓟妗(涓婂鏈)
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鑳界粰鎴戝嚭500閬撳皬瀛鍥涘勾绾у彛绠楅鍟?
绛旓細450-90= 80+330= 70脳700= 7000梅70= 4000梅80= 2400梅200= 420-90= 170+320= 1000-51= 520-260= 910-190= 35脳200= 22脳200= 8800梅400= 9300梅300= 6脳300= 1800梅200= 32脳30= 22脳30= 6脳201=17脳5= 4脳60= 4500梅900=170+90= 4800梅40= 14脳201=80梅16= 4200梅20= 2500梅...

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400閬鍙ｇ畻棰闄勭瓟妗
绛旓細12脳2脳5= 120 480梅80= 6 16脳5= 80 27脳3=81 90梅15= 6 48梅4= 12 640梅16= 40 39梅3= 13 24脳20= 480 32脳3=96 48梅16= 3 12脳8= 96 27脳3=81 56梅14= 4 24梅8= 3 14脳2= 28 83锛45= 38 560梅80=7 96梅24=4 40梅20= 2 40脳30= 120 37锛26= 63 7...

鍥涘勾绾у彛绠楅300閬
绛旓細1銆240+480梅30脳2 =240+16脳2 =240+32 =272 2銆225-10脳(6+13)=225-10脳19 =225-190 =35 3銆(120脳2+120)梅9 =锛240+120锛壝9 =360梅9 =40 4銆164-13脳5+85 =164-65+85 =99+85 =184 5銆330梅(65-50)=330梅15 =22 6銆128-6脳8梅16 =128-48梅16 =128-3 =...

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