小学四年级口算题 四年级口算题300道
\u5c0f\u5b66\u56db\u5e74\u7ea7\u53e3\u7b97\u9898\uff0125 -15 -80 = 10 -80 = -70
26 -6 -64 = 20 -64 = -44
27 + 3 -48 = 30 -48 = -18
28 + 12 -32 = 40 -32 = 8
29 + 21 -16 = 50 -16 = 34
30 + 30 + 0 = 60 + 0 = 60
31 + 39 + 16 = 70 + 16 = 86
32 + 48 + 32 = 80 + 32 = 112
33 + 57 + 48 = 90 + 48 = 138
34 + 66 + 64 = 100 + 64 = 164
35 + 75 + 80 = 110 + 80 = 190
36 + 84 + 96 = 120 + 96 = 216
37 + 93 + 112 = 130 + 112 = 242
38 + 102 + 128 = 140 + 128 = 268
39 + 111 + 144 = 150 + 144 = 294
40 -30 -140 = 10 -140 = -130
41 -21 -124 = 20 -124 = -104
42 -12 -108 = 30 -108 = -78
43 -3 -92 = 40 -92 = -52
44 + 6 -76 = 50 -76 = -26
45 + 15 -60 = 60 -60 = 0
46 + 24 -44 = 70 -44 = 26
47 + 33 -28 = 80 -28 = 52
48 + 42 -12 = 90 -12 = 78
49 + 51 + 4 = 100 + 4 = 104
50 + 60 + 20 = 110 + 20 = 130
51 + 69 + 36 = 120 + 36 = 156
52 + 78 + 52 = 130 + 52 = 182
53 + 87 + 68 = 140 + 68 = 208
54 + 96 + 84 = 150 + 84 = 234
55 -45 -200 = 10 -200 = -190
56 -36 -184 = 20 -184 = -164
57 -27 -168 = 30 -168 = -138
58 -18 -152 = 40 -152 = -112
59 -9 -136 = 50 -136 = -86
60 + 0 -120 = 60 -120 = -60
61 + 9 -104 = 70 -104 = -34
62 + 18 -88 = 80 -88 = -8
63 + 27 -72 = 90 -72 = 18
64 + 36 -56 = 100 -56 = 44
65 + 45 -40 = 110 -40 = 70
66 + 54 -24 = 120 -24 = 96
67 + 63 -8 = 130 -8 = 122
68 + 72 + 8 = 140 + 8 = 148
69 + 81 + 24 = 150 + 24 = 174
70 -60 -260 = 10 -260 = -250
71 -51 -244 = 20 -244 = -224
72 -42 -228 = 30 -228 = -198
73 -33 -212 = 40 -212 = -172
74 -24 -196 = 50 -196 = -146
11 3^3-5
12 4^2-34%
13 3.25-315%
14 7^3+445%
15 12+5268.32-2569
16 123+456-52*8
17 45%+6325
18 1/2+1/3+1/4
19 789+456-78
20 45%+54%-36%
2. \u8131\u5f0f\u8ba1\u7b97\uff08\u80fd\u7b80\u7b97\u8981\u7b80\u7b97\uff0912%
6/7\uff0b2/15\uff0b1/7\uff0b 13/15 19/21\uff0b5/7\uff0d3/14
2/3\uff0b5/9\uff0d2/3\uff0b5/9
8/9\uff0d\uff081/4\uff0d1/9\uff09\uff0d 3/4
\u4e00\u3001 \u8ba1\u7b97\uff0860%\uff09
1\u3001 \u53e3\u7b97\uff0814%\uff09
3.5\u00d72= 4.8\u00f71.2= 8-7.5= 1.4\u00d70.5= 1- =
10.5-3.5= 0.6+2.5= 15\u00d70.6= 1\u00f70.4= + =
4\u00f720= 1.25\u00d70.8= 0.32\u00d710= 2.5-2.5\u00d70.4=
2\u3001 \u600e\u6837\u7b97\u7b80\u4fbf\u5c31\u600e\u6837\u7b97\uff0812%\uff09
12.5\u00d73.2\u00d70.25 4.56\u00d7101\uff0d4.56 \uff080.2\uff0b7.63\u00f70.7\uff09\u00d70.1
3\u3001 \u89e3\u65b9\u7a0b\uff0812%\uff09
0.12\u03c7\uff0b1.8\u00d70.9=7.2 (9\uff0d5\u03c7)\u00d70.3=1.02 6.4\u03c7-\u03c7=28+4.4
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4\uff0e\u4e09\u5343\u516d\u767e\u4e07\u96f6\u4e03\u5341\u5199\u4f5c( )\uff0e
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7\uff0e\u88ab\u51cf\u6570\u3001\u51cf\u6570\u3001\u5dee\u4e09\u8005\u7684\u548c\u662f24\uff0c\u88ab\u51cf\u6570\u662f( )\uff0e
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9\uff0e9000\u516c\u9877=( )\u5e73\u65b9\u5343\u7c73\uff0e
10\uff0e3\u5e73\u65b9\u5343\u7c73=( )\u5e73\u65b9\u7c73\uff0e
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12\uff0e0.37\u5199\u6210\u5206\u6570\u662f( )\uff0e
13\uff0e\u88ab\u9664\u6570\u7b49\u4e8e\u9664\u6570( )\u5546\uff0e
14\uff0e\u4e24\u4e2a\u56e0\u6570\u7684\u79ef\u662f96\uff0c\u5176\u4e2d\u4e00\u4e2a\u56e0\u6570\u662f6\uff0c\u53e6\u4e00\u4e2a\u56e0\u6570\u662f( )\uff0e
15\uff0e499000\u7ea6\u7b49\u4e8e( )\u4e07\uff0e
16\uff0e\u4e07\u7ea7\u4e0a\u7684\u8ba1\u6570\u5355\u4f4d\u6709( )\uff0e
\u4e8c\u3001\u5224\u65ad(16\u5206)
1\uff0e\u4ebf\u4ee5\u5185\u6570\u7684\u8bfb\u6cd5\uff0c\u6bcf\u7ea7\u672b\u5c3e\u4e0d\u7ba1\u6709\u51e0\u4e2a\uff0c\u90fd\u53ea\u8bfb\u4e00\u4e2a\u201c\u96f6\u201d\uff0e ( )
2\uff0e\u6574\u6570\u90fd\u6bd4\u5c0f\u6570\u5927\uff0e ( )
3\uff0e\u4e00\u4e2a\u56e0\u6570\u4e0d\u53d8\uff0c\u53e6\u4e00\u4e2a\u56e0\u6570\u6269\u592710\u500d\uff0c\u79ef\u4e5f\u6269\u592710\u500d\uff0e ( )
4\uff0e80.80\u8bfb\u4f5c\uff1a\u516b\u5341\u70b9\u516b\u5341\uff0e ( )
5\uff0e\u79ef\u4e00\u5b9a\u6bd4\u56e0\u6570\u5927\uff0e ( )
6\uff0e4\u89d28\u5206\u7b49\u4e8e0.48\u5143\uff0e ( )
7\uff0e3700\u00f7200\u5546\u662f18\u4f59\u6570\u662f1\uff0e ( )
8\uff0e\u6bd4\u8f83\u5c0f\u6570\u7684\u5927\u5c0f\u8981\u5148\u6bd4\u8f83\u6574\u6570\u90e8\u5206\uff0c\u518d\u6bd4\u8f83\u5c0f\u6570\u90e8\u5206\uff0e ( )
\u4e09\u3001\u8ba1\u7b97(18\u5206)
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\u4e94\u3001\u5e94\u7528\u9898(28\u5206)
1\uff0e\u4e00\u5f20\u529e\u516c\u684c\u7684\u4ef7\u94b1\u662f210\u5143\uff0c\u662f\u4e00\u628a\u6905\u5b50\u7684\u4ef7\u94b1\u76843\u500d\uff0c\u4e00\u628a\u6905\u5b50\u591a\u5c11\u5143\uff1f(\u5148\u5217\u51fa\u542b\u6709\u672a\u77e5\u6570x\u7684\u7b49\u5f0f\uff0c\u518d\u89e3\u7b54\uff0e)
2\uff0e\u4e00\u672c\u6545\u4e8b\u4e66\u7684\u4ef7\u683c\u662f18.31\u5143\uff0c\u6bd4\u4e00\u672c\u79d1\u6280\u4e66\u8d351.49\u5143\uff0c\u8fd9\u672c\u79d1\u6280\u4e66\u591a\u5c11\u5143\uff1f(\u5148\u5217\u51fa\u542b\u6709\u672a\u77e5\u6570x\u7684\u7b49\u5f0f\uff0c\u518d\u89e3\u7b54\uff0e)
3\uff0e\u65b0\u534e\u4e66\u5e97\u8fd0\u8fdb\u6587\u827a\u4e662800\u518c\uff0c\u8fd0\u8fdb\u7684\u79d1\u6280\u4e66\u6bd4\u6587\u827a\u4e66\u76842\u500d\u5c111200\u518c\uff0e\u8fd0\u8fdb\u79d1\u6280\u4e66\u591a\u5c11\u518c\uff1f
4\uff0e\u6709\u5757\u957f\u65b9\u5f62\u7a3b\u7530\uff0c\u957f900\u7c73\uff0c\u5bbd200\u7c73\uff0c\u5171\u6536\u6c34\u7a3b97200\u5343\u514b\uff0c\u5e73\u5747\u6bcf\u516c\u9877\u6536\u6c34\u7a3b\u591a\u5c11\u5343\u514b\uff1f
5\uff0e\u4ece\u679c\u56ed\u8fd0\u8d701500\u5343\u514b\u6843\uff0c\u8fd0\u8d70\u7684\u82f9\u679c\u662f\u6843\u76844\u500d\uff0c\u6843\u548c\u82f9\u679c\u4e00\u5171\u8fd0\u8d70\u591a\u5c11\u5343\u514b\uff1f
2006\u20142007\u5b66\u5e74\u5ea6\u7b2c\u4e00\u5b66\u671f
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1\u3001\u53e3\u7b97:10'
450\u00f790\uff1d 250\u00d780\uff1d 75\u00f715\uff1d 700\uff0b380\uff1d
600\uff0d320\uff1d 96\u00f78\uff1d 36\uff0b36\uff1d 90\u00d79\uff0d9\uff1d
15\u00d72\u00d73\uff1d 99\uff0b101\uff1d 360\uff0d90\uff1d 200\u00f74\u00d75\uff1d
505\u00f7( )\uff1d5 ( )\uff0b1.8\uff1d2 90\u00d7( )=0 ( )\u00f73=21
98\u4e07\uff0d48\u4e07= 75\u4ebf+63\u4ebf= 1600\u00f740= 50\u00d760=
2\u3001\u5217\u7ad6\u5f0f\u8ba1\u7b97\uff0c\u6253\u2605\u7684\u8981\u9a8c\u7b97:9'
4080\u00d750\uff1d 305\u00f761= 306\u00d737= \u2605600\u00f767\uff1d
3\u3001\u8131\u5f0f\u8ba1\u7b97\uff1a18'
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1\u3001\u5929\u738b\u661f\u5230\u592a\u9633\u7684\u5e73\u5747\u8ddd\u79bb\u4e3a2870990000\u5343\u7c73\uff0c\u8fd9\u4e2a\u6570\u8bfb\u4f5c\uff08 \uff09\uff0c\u6539\u5199\u6210\u7528\u201c\u4e07\u201d\u505a\u5355\u4f4d\u7684\u6570\u662f\uff08 \uff09\uff0c\u7701\u7565\u201c\u4ebf\u201d\u540e\u9762\u7684\u4f4d\u6570\u7ea6\u662f\uff08 \uff09\u3002
2\u3001\u5730\u7403\u4e0e\u592a\u9633\u7684\u5e73\u5747\u8ddd\u79bb\u662f\u4e00\u4ebf\u56db\u5343\u4e5d\u767e\u4e94\u5341\u4e5d\u4e07\u4e03\u5343\u516b\u767e\u4e03\u5341\u5343\u7c73\uff0c
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9\u3001\u5728\u25cb\u91cc\u586b\u4e0a\u201c\u201d\u6216\u201c=\u201d\u3002
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10\u3001\u5982\u679c3\u25a12\u00f736\u7684\u5546\u662f\u4e00\u4f4d\u6570\uff0c\u25a1\u91cc\u7684\u6570\u6700\u5927\u53ef\u4ee5\u586b\uff08 \uff09\uff0c\u6700\u5c0f\u53ef\u4ee5\u586b\uff08 \uff09\u3002
11\u3001\u5728\u4e00\u9053\u9664\u6cd5\u7b97\u5f0f\u4e2d\uff0c\u88ab\u9664\u6570\u6269\u592710\u500d\uff0c\u9664\u6570\u4e5f\u6269\u592710\u500d\uff0c\u5546\uff08 \uff09\u3002
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12\u7684\u500d\u6570\u6709\uff08 \uff09\u3002
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2\u3001\u4e0b\u9762\u7684\u6570\u4e2d\uff0c\uff08 \uff09\u8bfb\u7684\u96f6\u6700\u591a\u3002
A \u300150005500 B \u300150500505 C \u300150055005 D \u300155005005
4\u3001\u4e0b\u9762\u7684\u6570\u4e2d\uff0c\uff08 \uff09\u6700\u63a5\u8fd190\u4e07\u3002
A \u3001 901000 B \u3001900090 C \u3001895000 D\u3001 89999
5\u3001\uff08 \uff096\u3001\u8ba1\u7b97\u7b97\u5f0f800\u00f716\u65f6\uff0c\u53ef\u4ee5\u5c06\u5b83\u8f6c\u5316\u4e3a
A\u3001800\u00f710\u00f76 B\u3001800\u00f78\u00f72 C\u3001800\u00f712\u00f74
6\u3001\u4e09\u4f4d\u6570\u9664\u4ee5\u4e24\u4f4d\u6570\uff0c\u5546\u53ef\u80fd\u662f\uff08 \uff09\u3002
A\u30011\u4f4d\u6570 B\u30012\u4f4d\u6570 C\u30013\u4f4d\u6570 D\u30011\u4f4d\u6570\u62162\u4f4d\u6570
7\u3001\u628a\u4e00\u5f20\u957f\u65b9\u5f62\u7eb8\u5bf9\u6298\u4e24\u6b21\uff0c\u6298\u75d5\u95f4\u7684\u5173\u7cfb\u662f\uff08 \uff09\u3002
A\u3001\u4e92\u76f8\u5e73\u884c B\u3001\u4e92\u76f8\u5782\u76f4 C\u3001\u53ef\u80fd\u4e92\u76f8\u5e73\u884c\uff0c\u4e5f\u53ef\u80fd\u5782\u76f4
8\u3001\u660e\u660e\u753b\u4e86\u4e00\u6761\u6bd46\u5398\u7c73\u957f2\u6beb\u7c73\u7684\uff08 \uff09\u3002 A\u3001\u7ebf\u6bb5 B\u3001\u5c04\u7ebf C\u3001\u76f4\u7ebf
9\u300116\u3001\u25a172\u00f767\u7684\u5546\u662f\u4e24\u4f4d\u6570\uff0c\u25a1\u4e2d\u7684\u6570\u6709\uff08 \uff09\u79cd\u586b\u6cd5\uff1f A\u30013 B\u30014 C\u30015
10\u3001\u56db\u5e74\u7ea7\u4e00\u73ed\u6709\u7537\u751f24\u4eba\uff0c\u5973\u751f28\u4eba\uff0c\u6bcf\u56db\u4eba\u4e00\u7ec4\u53c2\u52a0\u52b3\u52a8\uff0c\u4e00\u5171\u8981\u5206\u6210\uff08 \uff09\u7ec4\u3002
A\u300124\u00f74+28 B\u300124+28\u00f74 C\u3001\uff0824+28\uff09\u00f74
1\u3001240+480\u00f730\u00d72
=240+16\u00d72
=240+32
=272
2\u3001225-10\u00d7(6+13)
=225-10\u00d719
=225-190
=35
3\u3001(120\u00d72+120)\u00f79
=\uff08240+120\uff09\u00f79
=360\u00f79
=40
4\u3001164-13\u00d75+85
=164-65+85
=99+85
=184
5\u3001330\u00f7(65-50)
=330\u00f715
=22
6\u3001128-6\u00d78\u00f716
=128-48\u00f716
=128-3
=125
\u6269\u5c55\u8d44\u6599
\u901f\u7b97\u7684\u53e3\u8bc0\uff1a
\u4efb\u610f\u4e24\u4f4d\u6570\u4e58\u4ee5\u4efb\u610f\u4e24\u4f4d\u6570\uff0c\u53ea\u8981\u9b4f\u5f0f\u7cfb\u6570\u4e3a\u201c0\u201d\u6240\u5f97\u7684\u79ef\uff0c\u4e00\u5b9a\u662f\u4e24\u9879\u6570\u4e2d\u7684\u5c3e\u4e58\u5c3e\u6240\u5f97\u7684\u79ef\u4e3a\u540e\u79ef\uff0c\u5934\u4e58\u5934\uff08\u5176\u4e2d\u4e00\u9879\u5934\u52a01\u7684\u548c\uff09\u7684\u79ef\u4e3a\u524d\u79ef\uff0c\u4e24\u79ef\u76f8\u90bb\u6240\u5f97\u7684\u79ef\u3002
ab\u00d7cd \u9b4f\u5f0f\u7cfb\u6570=\uff08a-c)\u00d7d+(b+d-10)\u00d7c \u201c\u5934\u4e58\u5934\uff0c\u5c3e\u4e58\u5c3e\uff0c\u5408\u96f6\u4e3a\u6574\uff0c\u8865\u4f59\u6570\u3002\u201d
1\u3001\u5148\u6c42\u51fa\u9b4f\u5f0f\u7cfb\u6570
2\u3001\u5934\u4e58\u5934\uff08\u5176\u4e2d\u4e00\u9879\u52a0\u4e00\uff09\u4e3a\u524d\u79ef \uff08\u9002\u5e94\u5c3e\u76f8\u52a0\u4e3a10\u7684\u6570\uff09
3\u3001\u5c3e\u4e58\u5c3e\u4e3a\u540e\u79ef\u3002
4\u3001\u4e24\u79ef\u76f8\u8fde\uff0c\u5728\u5341\u4f4d\u6570\u4e0a\u52a0\u4e0a\u9b4f\u5f0f\u7cfb\u6570\u5373\u53ef \u3002
90÷30=
270÷30=
270×30=
84÷21=
76÷9=
66÷7=
100－54=
123＋15=
360÷4=
55÷5=
32×6= 7000÷70＝
200÷40＝
180÷30=
240÷40=
35×2=
140×7=
13×6=
280×3=
350×2=
50×11=
250×6=
7200+900=
410-201=
125×8=
48×20=
6600÷600=
390+140=
11×80=
24×50=
3600÷400= 4000÷50=
530－70=
420－90=
9600÷30=
7×700=
203+98=
1800÷300=
240+570=
4800÷400=
370+580=
580－490=
910－370=
25×8=
270－190=
36×2=
75÷25=
330÷11=
6×800=
5400÷9=
420÷60= 9×800=
3×330=
300×7=
9×500=
390÷13=
6300÷700=
5600÷700=
4800÷12=
3500÷7=
370＋560=
520＋490＝
450－90＝
80＋330＝
70×700＝
7000÷70＝
4000÷80＝
2400÷200＝
420－90＝
170＋320＝
1000－51＝ 520－260＝
910－190＝
35×200＝
22×200＝
8800÷400＝
9300÷300＝
6×300＝
25 -15 -80 =
26 -6 -64 =
27 + 3 -48 =
28 + 12 -32
29 + 21 -16 =
30 + 30 + 0 =
31 + 39 + 16 =
32 + 48 + 32 =
33 + 57 + 48 =
34 + 66 + 64 =
35 + 75 + 80 =
36 + 84 + 96 =
37 + 93 + 112 =
38 + 102 + 128 =
39 + 111 + 144 =
40 -30 -140 =
41 -21 -124 =
42 -12 -108 =
43 -3 -92 =
44 + 6 -76 =
45 + 15 -60 =
46 + 24 -44 =
47 + 33 -28 =
48 + 42 -12 =
49 + 51 + 4 =
50 + 60 + 20 =
51 + 69 + 36 =
52 + 78 + 52 =
53 + 87 + 68 =
54 + 96 + 84 =
55 -45 -200
56 -36 -184 =
57 -27 -168 =
58 -18 -152 =
59 -9 -136
60 + 0 -120
61 + 9 -104
62 + 18 -88
63 + 27 -72 =
64 + 36 -56
65 + 45 -40 =
66 + 54 -24 =
67 + 63 -8 =
68 + 72 + 8 =
69 + 81 + 24
70 -60 -260
71 -51 -244 =
72 -42 -228 =
73 -33 -212 =
74 -24 -196 =
300*400=
120*500=
380+450=
520-360=
180+930=
7.2+2.8= 2.63+0.37= 2.5*0.4= 8-2.5
7.2＋2.8=
12×2.5＝
2.63＋0.37＝
0.7×16－16×0.2＝
0.96÷0.3＝
1.5－4.5=
2.5×0.4
1.4×2.5×4＝
8－2.5＝
6÷1.2=
9.2÷2.3=
24÷4＋56÷4＝
0.36＋0.64＝
4÷0.25＝
1.8×5=
30×（200＋3）＝
8.4÷4.2=
8×1.5＝
4.8÷0.3=
7.2+2.8= 2.63+0.37= 2.5*0.4= 8-2.5
7.2＋2.8=
12×2.5＝
2.63＋0.37＝
0.7×16－16×0.2＝
0.96÷0.3＝
1.5－4.5=
2.5×0.4
1.4×2.5×4＝
8－2.5＝
6÷1.2=
9.2÷2.3=
24÷4＋56÷4＝
0.36＋0.64＝
4÷0.25＝
1.8×5=
30×（200＋3）＝
8.4÷4.2=
8×1.5＝
4.8÷0.3=
2.73＋1.5×4＝
300*400=
120*500=
380+450=
520-360=
180+930=
300*45+300*55=
要答案吗？
120×2=
90÷30=
270÷30=
270×30=
84÷21=
76÷9=
66÷7=
100－54=
123＋15=
360÷4=
55÷5=
32×6= 7000÷70＝
200÷40＝
180÷30=
240÷40=
35×2=
140×7=
13×6=
280×3=
350×2=
50×11=
250×6=
7200+900=
410-201=
125×8=
48×20=
6600÷600=
390+140=
11×80=
24×50=
3600÷400= 4000÷50=
530－70=
420－90=
9600÷30=
7×700=
203+98=
1800÷300=
240+570=
4800÷400=
370+580=
580－490=
910－370=
25×8=
270－190=
36×2=
75÷25=
330÷11=
6×800=
5400÷9=
420÷60= 9×800=
3×330=
300×7=
9×500=
390÷13=
6300÷700=
5600÷700=
4800÷12=
3500÷7=
370＋560=
520＋490＝
450－90＝
80＋330＝
70×700＝
7000÷70＝
4000÷80＝
2400÷200＝
420－90＝
170＋320＝
1000－51＝ 520－260＝
910－190＝
35×200＝
22×200＝
8800÷400＝
9300÷300＝
6×300＝
25 -15 -80 =
26 -6 -64 =
27 + 3 -48 =
28 + 12 -32
29 + 21 -16 =
30 + 30 + 0 =
31 + 39 + 16 =
32 + 48 + 32 =
33 + 57 + 48 =
34 + 66 + 64 =
35 + 75 + 80 =
36 + 84 + 96 =
37 + 93 + 112 =
38 + 102 + 128 =
39 + 111 + 144 =
40 -30 -140 =
41 -21 -124 =
42 -12 -108 =
43 -3 -92 =
44 + 6 -76 =
45 + 15 -60 =
46 + 24 -44 =
47 + 33 -28 =
48 + 42 -12 =
49 + 51 + 4 =
50 + 60 + 20 =
51 + 69 + 36 =
52 + 78 + 52 =
53 + 87 + 68 =
54 + 96 + 84 =
55 -45 -200
56 -36 -184 =
57 -27 -168 =
58 -18 -152 =
59 -9 -136
60 + 0 -120
61 + 9 -104
62 + 18 -88
63 + 27 -72 =
64 + 36 -56
65 + 45 -40 =
66 + 54 -24 =
67 + 63 -8 =
68 + 72 + 8 =
69 + 81 + 24
70 -60 -260
71 -51 -244 =
72 -42 -228 =
73 -33 -212 =
74 -24 -196 =
300*400=
120*500=
380+450=
520-360=
180+930=
7.2+2.8= 2.63+0.37= 2.5*0.4= 8-2.5
7.2＋2.8=
12×2.5＝
2.63＋0.37＝
0.7×16－16×0.2＝
0.96÷0.3＝
1.5－4.5=
2.5×0.4
1.4×2.5×4＝
8－2.5＝
6÷1.2=
9.2÷2.3=
24÷4＋56÷4＝
0.36＋0.64＝
4÷0.25＝
1.8×5=
30×（200＋3）＝
8.4÷4.2=
8×1.5＝
4.8÷0.3=
7.2+2.8= 2.63+0.37= 2.5*0.4= 8-2.5
7.2＋2.8=
12×2.5＝
2.63＋0.37＝
0.7×16－16×0.2＝
0.96÷0.3＝
1.5－4.5=
2.5×0.4
1.4×2.5×4＝
8－2.5＝
6÷1.2=
9.2÷2.3=
24÷4＋56÷4＝
0.36＋0.64＝
4÷0.25＝
1.8×5=
30×（200＋3）＝
8.4÷4.2=
8×1.5＝
4.8÷0.3=
2.73＋1.5×4＝
300*400=
120*500=
380+450=
520-360=
180+930=
300*45+300*55=
L4
不懂。
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