四年级口算题 1000道四年级口算题（带答案）
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1.45+15\u00d76= 135
2.250\u00f75\u00d78=400
3.6\u00d75\u00f72\u00d74=60
4.30\u00d73+8=98
5.400\u00f74+20\u00d75= 200
6.10+12\u00f73+20=34
7.(80\u00f720+80)\u00f74=21
8.70+(100-10\u00d75)=120
9.360\u00f740= 9
10.40\u00d720= 800
11.80-25= 55
12.70+45=115
13.90\u00d72= 180
14.16\u00d76= 96
15.300\u00d76= 1800
16.540\u00f79=60
17.30\u00d720= 600
18.400\u00f74= 100
19.350-80= 270
20.160+70=230
21.18-64\u00f78= 10
22.42\u00f76+20=27
23.40-5\u00d77= 5
24.80+60\u00f73=100
25.41+18\u00f72= 50
26.75-11\u00d75= 20
27.42+7-29= 20
28.5600\u00f780=70
29.25\u00d716= 400
30.120\u00d725= 3000
31.36\u00d711= 396
32.1025\u00f725=41
33.336+70= 406
34.25\u00d79\u00d74= 900
35.200-33\u00d73= 101
36.3020-1010=2010
37.12\u00d750= 600
38.25\u00d78= 200
39.23\u00d711= 253
40.125\u00f725=5
41.4200-2200=2000
42.220+80= 300
43.20\u00d78\u00d75= 800
44.600-3\u00d7200=0
45.20+20\u00f72= 30
46.35-25\u00f75= 30
47.36+8-40= 4
48.2800\u00f740=70
49.98\u00f714 = 7
50.96\u00f724 = 4
51.56\u00f714 =4
52.65\u00f713 = 5
53.75\u00f715 = 5
54.120\u00f724 =5
55.200\u00f725 = 8
56.800\u00f716 = 50
57.840\u00f721 =40
58.560\u00f714 = 40
59.390\u00f713 = 30
60.600\u00f715 =40
61.72\u00f724 = 3
62.85\u00f717 = 5
63.90\u00f715 =6
64.96\u00f716 = 6
65.78\u00f726 = 4
66.51\u00f717 =3
67.80\u00f740 = 2
68.100\u00f720 = 5
69.100\u00f74 =25
70.240\u00f740 = 6
71.920\u00f74 = 230
72.300\u00f760=5
73.64\u00f72 = 32
74.64\u00f74 = 16
75.50\u00f75 =10
76.60\u00f78 = 7.5
77.96\u00f74 = 24
78.90\u00f76 =15
79.400+80 = 480
80.400-80 = 320
81.40\u00d780 =3200
82.400\u00f780 = 5
83.48\u00f716 = 3
84.96\u00f724 =4
85.160\u00d75= 800
86.4\u00d7250= 1000
87.0\u00d7518= 0
88.10\u00d776= 760
89.36\u00d710=360
90.15\u00d76= 90
91.24\u00d73= 72
92.5\u00d718= 90
93.26\u00d74= 74
94.7\u00d715=105
95.32\u00d730= 960
96.40\u00d715= 600
97.60\u00d712= 720
98.23\u00d730= 690
99.30\u00d750=1500
100.5\u00d7700=350
1.45+15\u00d76= 135
2.250\u00f75\u00d78=400
3.6\u00d75\u00f72\u00d74=60
4.30\u00d73+8=98
5.400\u00f74+20\u00d75= 200
6.10+12\u00f73+20=34
7.(80\u00f720+80)\u00f74=21
8.70+(100-10\u00d75)=120
9.360\u00f740= 9
10.40\u00d720= 800
11.80-25= 55
12.70+45=115
13.90\u00d72= 180
14.16\u00d76= 96
15.300\u00d76= 1800
16.540\u00f79=60
17.30\u00d720= 600
18.400\u00f74= 100
19.350-80= 270
20.160+70=230
21.18-64\u00f78= 10
22.42\u00f76+20=27
23.40-5\u00d77= 5
24.80+60\u00f73=100
25.41+18\u00f72= 50
26.75-11\u00d75= 20
27.42+7-29= 20
28.5600\u00f780=70
29.25\u00d716= 400
30.120\u00d725= 3000
31.36\u00d711= 396
32.1025\u00f725=41
33.336+70= 406
34.25\u00d79\u00d74= 900
35.200-33\u00d73= 101
36.3020-1010=2010
37.12\u00d750= 600
38.25\u00d78= 200
39.23\u00d711= 253
40.125\u00f725=5
41.4200-2200=2000
42.220+80= 300
43.20\u00d78\u00d75= 800
44.600-3\u00d7200=0
45.20+20\u00f72= 30
46.35-25\u00f75= 30
47.36+8-40= 4
48.2800\u00f740=70
49.98\u00f714 = 7
50.96\u00f724 = 4
51.56\u00f714 =4
52.65\u00f713 = 5
53.75\u00f715 = 5
54.120\u00f724 =5
55.200\u00f725 = 8
56.800\u00f716 = 50
57.840\u00f721 =40
58.560\u00f714 = 40
59.390\u00f713 = 30
60.600\u00f715 =40
61.72\u00f724 = 3
62.85\u00f717 = 5
63.90\u00f715 =6
64.96\u00f716 = 6
65.78\u00f726 = 4
66.51\u00f717 =3
67.80\u00f740 = 2
68.100\u00f720 = 5
69.100\u00f74 =25
70.240\u00f740 = 6
71.920\u00f74 = 230
72.300\u00f760=5
73.64\u00f72 = 32
74.64\u00f74 = 16
75.50\u00f75 =10
76.60\u00f78 = 7.5
77.96\u00f74 = 24
78.90\u00f76 =15
79.400+80 = 480
80.400-80 = 320
81.40\u00d780 =3200
82.400\u00f780 = 5
83.48\u00f716 = 3
84.96\u00f724 =4
85.160\u00d75= 800
86.4\u00d7250= 1000
87.0\u00d7518= 0
88.10\u00d776= 760
89.36\u00d710=360
90.15\u00d76= 90
91.24\u00d73= 72
92.5\u00d718= 90
93.26\u00d74= 74
94.7\u00d715=105
95.32\u00d730= 960
96.40\u00d715= 600
97.60\u00d712= 720
98.23\u00d730= 690
99.30\u00d750=1500
100.5\u00d7700=350
1.45+15\u00d76= 135
2.250\u00f75\u00d78=400
3.6\u00d75\u00f72\u00d74=60
4.30\u00d73+8=98
5.400\u00f74+20\u00d75= 200
6.10+12\u00f73+20=34
7.(80\u00f720+80)\u00f74=21
8.70+(100-10\u00d75)=120
9.360\u00f740= 9
10.40\u00d720= 800
11.80-25= 55
12.70+45=115
13.90\u00d72= 180
14.16\u00d76= 96
15.300\u00d76= 1800
16.540\u00f79=60
17.30\u00d720= 600
18.400\u00f74= 100
19.350-80= 270
20.160+70=230
21.18-64\u00f78= 10
22.42\u00f76+20=27
23.40-5\u00d77= 5
24.80+60\u00f73=100
25.41+18\u00f72= 50
26.75-11\u00d75= 20
27.42+7-29= 20
28.5600\u00f780=70
29.25\u00d716= 400
30.120\u00d725= 3000
31.36\u00d711= 396
32.1025\u00f725=41
33.336+70= 406
34.25\u00d79\u00d74= 900
35.200-33\u00d73= 101
36.3020-1010=2010
37.12\u00d750= 600
38.25\u00d78= 200
39.23\u00d711= 253
40.125\u00f725=5
41.4200-2200=2000
42.220+80= 300
43.20\u00d78\u00d75= 800
44.600-3\u00d7200=0
45.20+20\u00f72= 30
46.35-25\u00f75= 30
47.36+8-40= 4
48.2800\u00f740=70
49.98\u00f714 = 7
50.96\u00f724 = 4
51.56\u00f714 =4
52.65\u00f713 = 5
53.75\u00f715 = 5
54.120\u00f724 =5
55.200\u00f725 = 8
56.800\u00f716 = 50
57.840\u00f721 =40
58.560\u00f714 = 40
59.390\u00f713 = 30
60.600\u00f715 =40
61.72\u00f724 = 3
62.85\u00f717 = 5
63.90\u00f715 =6
64.96\u00f716 = 6
65.78\u00f726 = 4
66.51\u00f717 =3
67.80\u00f740 = 2
68.100\u00f720 = 5
69.100\u00f74 =25
70.240\u00f740 = 6
71.920\u00f74 = 230
72.300\u00f760=5
73.64\u00f72 = 32
74.64\u00f74 = 16
75.50\u00f75 =10
76.60\u00f78 = 7.5
77.96\u00f74 = 24
78.90\u00f76 =15
79.400+80 = 480
80.400-80 = 320
81.40\u00d780 =3200
82.400\u00f780 = 5
83.48\u00f716 = 3
84.96\u00f724 =4
85.160\u00d75= 800
86.4\u00d7250= 1000
87.0\u00d7518= 0
88.10\u00d776= 760
89.36\u00d710=360
90.15\u00d76= 90
91.24\u00d73= 72
92.5\u00d718= 90
93.26\u00d74= 74
94.7\u00d715=105
95.32\u00d730= 960
96.40\u00d715= 600
97.60\u00d712= 720
98.23\u00d730= 690
99.30\u00d750=1500
100.5\u00d7700=350
1.45+15\u00d76= 135
2.250\u00f75\u00d78=400
3.6\u00d75\u00f72\u00d74=60
4.30\u00d73+8=98
5.400\u00f74+20\u00d75= 200
6.10+12\u00f73+20=34
7.(80\u00f720+80)\u00f74=21
8.70+(100-10\u00d75)=120
9.360\u00f740= 9
10.40\u00d720= 800
11.80-25= 55
12.70+45=115
13.90\u00d72= 180
14.16\u00d76= 96
15.300\u00d76= 1800
16.540\u00f79=60
17.30\u00d720= 600
18.400\u00f74= 100
19.350-80= 270
20.160+70=230
21.18-64\u00f78= 10
22.42\u00f76+20=27
23.40-5\u00d77= 5
24.80+60\u00f73=100
25.41+18\u00f72= 50
26.75-11\u00d75= 20
27.42+7-29= 20
28.5600\u00f780=70
29.25\u00d716= 400
30.120\u00d725= 3000
31.36\u00d711= 396
32.1025\u00f725=41
33.336+70= 406
34.25\u00d79\u00d74= 900
35.200-33\u00d73= 101
36.3020-1010=2010
37.12\u00d750= 600
38.25\u00d78= 200
39.23\u00d711= 253
40.125\u00f725=5
41.4200-2200=2000
42.220+80= 300
43.20\u00d78\u00d75= 800
44.600-3\u00d7200=0
45.20+20\u00f72= 30
46.35-25\u00f75= 30
47.36+8-40= 4
48.2800\u00f740=70
49.98\u00f714 = 7
50.96\u00f724 = 4
51.56\u00f714 =4
52.65\u00f713 = 5
53.75\u00f715 = 5
54.120\u00f724 =5
55.200\u00f725 = 8
56.800\u00f716 = 50
57.840\u00f721 =40
58.560\u00f714 = 40
59.390\u00f713 = 30
60.600\u00f715 =40
61.72\u00f724 = 3
62.85\u00f717 = 5
63.90\u00f715 =6
64.96\u00f716 = 6
65.78\u00f726 = 4
66.51\u00f717 =3
67.80\u00f740 = 2
68.100\u00f720 = 5
69.100\u00f74 =25
70.240\u00f740 = 6
71.920\u00f74 = 230
72.300\u00f760=5
73.64\u00f72 = 32
74.64\u00f74 = 16
75.50\u00f75 =10
76.60\u00f78 = 7.5
77.96\u00f74 = 24
78.90\u00f76 =15
79.400+80 = 480
80.400-80 = 320
81.40\u00d780 =3200
82.400\u00f780 = 5
83.48\u00f716 = 3
84.96\u00f724 =4
85.160\u00d75= 800
86.4\u00d7250= 1000
87.0\u00d7518= 0
88.10\u00d776= 760
89.36\u00d710=360
90.15\u00d76= 90
91.24\u00d73= 72
92.5\u00d718= 90
93.26\u00d74= 74
94.7\u00d715=105
95.32\u00d730= 960
96.40\u00d715= 600
97.60\u00d712= 720
98.23\u00d730= 690
99.30\u00d750=1500
100.5\u00d7700=3500
15×2= 15×3= 15×4= 15×5= 15×6= 15×7= 15×8= 15×9=
25×2= 25×3= 25×4= 25×5= 25×6= 25×7= 25×8= 25×9=
125×2= 125×3= 125×4= 125×5= 125×6= 125×8=
35×2= 45×2= 55×2= 65×2= 75×2= 85×2= 95×2=
42×2= 21×2= 23×2= 24×2= 22×2= 27×2= 32×2= 26×2=
33×2= 36×2= 17×2= 18×2= 16×2= 12×2= 14×2= 13×2=
19×2= 12×5= 15×3= 15×30= 150×3= 150×30=
15×300= 3×150= 25×4= 45×20= 50×40= 250×4= 125×4=
21×40= 210×4= 60×90= 600×8= 60×50= 43×2= 20×34=
3×230= 12×40= 70×20= 3×900= 60×90= 12×7= 12×70=
120×70= 800×90= 40×200= 35×20= 25×20= 500×30=
18×5= 25×4= 350×20= 14×5= 140×50= 28×30=
30×20= 40×40= 140×20= 11×60= 13×30= 130×30=
50×40= 40×200= 50×600= 30×310= 70×8= 410×20=
20×10= 16×100= 200×70= 50×200= 32×30= 13×300=
40×800= 121×4= 60×900= 10×460= 120×3= 20×500=
70×20= 250×4= 120×50= 15×30= 25×30= 250×3=
150×40= 25×300= 30×150= 440×20= 50×800= 21×4=
25×40= 45×200= 70×40= 150×4= 125×8= 125×4=
210×4= 200×40= 310×3= 80×90= 600×7= 600×50=
43×20= 20×35= 3×210= 120×60= 700×20= 30×240=
姓名 四年级口算题——乘法（二）
15×2= 15×3= 15×4= 15×5= 15×6= 15×7= 15×8= 15×9=
25×2= 25×3= 25×4= 25×5= 25×6= 25×7= 25×8= 25×9=
125×2= 125×3= 125×4= 125×5= 125×6= 125×8=
35×2= 45×2= 55×2= 65×2= 75×2= 85×2= 95×2=
42×2= 21×2= 23×2= 24×2= 22×2= 27×2= 32×2= 26×2=
33×2= 36×2= 17×2= 18×2= 16×2= 12×2= 14×2= 12×5=
600×90= 12×8= 120×60= 500×70= 80×100= 90×200=
350×20= 450×20= 500×20= 16×50= 45×4= 350×10=
140×5= 14×30= 26×30= 60×200= 340×20= 180×50=
110×60= 11×300= 230×30= 550×4= 600×70= 80×200=
20×320= 700×8= 450×20= 200×10= 17×100= 500×70=
60×200= 34×30= 19×300= 80×800= 122×4= 70×900=
10×100= 12×300= 50×500= 700×60= 125×8= 160×50=
50×200= 32×30= 13×300= 40×800= 121×4= 60×900=
100×46= 220×3= 60×500= 700×20= 150×4= 220×40=
25×30= 250×30= 250×3= 450×20= 75×20= 30×150=
45×200= 15×600= 700×40= 150×200= 25×8= 25×40=
310×20= 200×50= 110×9= 800×30= 600×7= 600×30=
430×20= 300×25= 3×310= 120×70= 125×8= 12×5=
32×30= 22×30= 6×201= 25×3= 240×3= 780×6=
125×4= 750×2= 150×2= 70×40= 7×90= 60×120=
姓名 四年级口算题——混合运算（一）
15×2= 15×3= 15×4= 15×5= 15×6= 15×7= 15×8= 15×9=
25×2= 25×3= 25×4= 25×5= 25×6= 25×7= 25×8= 25×9=
125×2= 125×3= 125×4= 125×5= 125×6= 125×8=
35×2= 45×2= 55×2= 65×2= 75×2= 85×2= 95×2=
42×2= 21×2= 23×2= 24×2= 22×2= 27×2= 32×2= 26×2=
33×2= 36×2= 17×2= 18×2= 16×2= 12×2= 14×2= 13×2=
80÷2+100÷5= 45-20×3÷4= 240÷6-2×15= 52-36÷3+20=
320-200÷5×8= 140-20×5+25= 20×30+20×40= 25×(30+10)=
800÷40-400÷40= (840-400)÷4= 600÷(120÷60)= 60÷(10+120÷60)=
(600÷10+10)÷7= (26+14)×70= 260+14×(70-60)= (26+14)×(70-40)=
90÷(30×15÷50)= (35+45)÷(90-10)= 6×10-(21+29)= 25×(22+26×3)=
320-(120+25×4)= 80÷(32+8)×300= 3000-[(32+8)×30]= 30×[169-(60+9)]=
36÷3+6×2= 30÷(3+6×2)= 36÷[(3+6)×2]= 180÷(36÷12)+6=
180÷(36÷12+6)= 180÷[36÷(12+6)]= 450÷15+10×3= 450÷(15+10)×3=
450÷[(15+10)×2]= 240+180÷30×2= (40+180÷30)×2= (240+180)÷(30×2)=
36+360÷12= 800-800÷80×30= 800-(70×6+180)= 65×(40+20×3)=
姓名 四年级口算题——运算律二
加法交换律:两个数相加,交换加数的位置,它们的和不变.a+b=b+a
乘法交换律:两个数相乘,交换因数的位置,它们的积不变.axb=bxa
加法结合律:三个数相加,先把前面两个数相加,再加第三个数,或者先把后面两个数相加,再和第一个数相加,它们的和不变。即表示为：(a+b)+c=a+(b+c)；
乘法结合律:三个数相乘,先把前面两个数相乘,再乘第三个数,或者先把后面两个数相乘,再和第一个数相乘,它们的积不变。即表示为：(a×b) ×c=a×(b×c)；
乘法分配律：两个数的和与一个数相乘,可以把两个加数分别与这个数相乘,再把两个积相加(a±b)×c=a×b±a×c；
简便运算规律：一个数连续减去两个数，可以用这个数减去这两个数的和。
用字母表示：a－b－c＝a－(b＋c)
一个数连续除以两个数，可以用这个数除以这两个数的积。
用字母表示：a÷b÷c＝a÷(b×c)
52+44+148= 78+125+75= 79+89+121= 25×62×4=
125×7×8= 70×12×5= 32×25= 5×（12×11）=
560÷16= 70×105= 65×5+35×5= 65×5+45×5=
65×50+35×50= 12×70+38×70= 5×121+79×5= 45×6+35×6=
67×5-37×5= 120×90-110×90= 39×8-6×39= 326×78-326×22=
125×（8+4）= 15×（40-2）= 68×48+68×52= 5×27+63×5=
64×9-14×9= 23×134-34×23= 43+43×99= 99×62+62=
48×101-48= 102×45= 648+203= 63×15×2=
44×25= 36×101= 36×102= 45×99=
256×7-56×7= 49×25×8= 79×32+79×68= 67×101-67=
凑整加法口算题
11+89= 12+188= 224+76= 213+87= 17+183= 13+87=
16+984= 619+281= 416+384= 415+85= 318+82= 20+180=
321+79= 122+178= 123+77= 24+76= 525+475= 826+74=
27+773= 328+172= 129+371= 130+170= 31+169= 38+62=
33+67= 134+66= 135+165= 136+264= 437+63= 238+362=
439+61= 340+160= 141+159= 242+58= 143+57= 144+56=
45+55= 46+54= 147+153= 48+252= 449+51=
111+89= 212+188= 224+376= 213+187= 17+83= 213+87=
216+584= 619+81= 16+384= 115+85= 318+182= 120+180=
21+79= 22+178= 123+177= 124+76= 525+75= 126+74=
27+73= 128+172= 129+471= 130+70= 131+169= 138+62=
33+67= 734+66= 135+65= 136+64= 37+63= 38+362=
439+161= 240+160= 241+159= 142+58= 443+57= 844+56=
45+155= 246+54= 1147+153= 48+52= 349+51=
除法口算
1000÷8= 100÷25= 50÷2= 125÷5= 75÷25= 200÷25=
1000÷125= 150÷2= 90÷2= 70÷2= 50÷25= 110÷2=
130÷2= 170÷2= 190÷2= 30÷2= 56÷2= 28÷2=
32÷2= 34÷2= 42÷2= 46÷2= 48÷2= 52÷2=
54÷2= 58÷2= 64÷2= 72÷2= 76÷2= 84÷2=
92÷2= 96÷2= 98÷2= 28÷4= 27÷3= 36÷2=
姓名 四年级口算题——运算律二
加法交换律:两个数相加,交换加数的位置,它们的和不变.a+b=b+a
乘法交换律:两个数相乘,交换因数的位置,它们的积不变.a×b=b×a
加法结合律:三个数相加,先把前面两个数相加,再加第三个数,或者先把后面两个数相加,再和第一个数相加,它们的和不变。即表示为：(a+b)+c=a+(b+c)；
乘法结合律:三个数相乘,先把前面两个数相乘,再乘第三个数,或者先把后面两个数相乘,再和第一个数相乘,它们的积不变。即表示为：(a×b) ×c=a×(b×c)；
480+325+75 168+250+32 85+41+15+59 78+46+154 36×25
=
=
130-46-34= 263-96-104= 970-132-68 15×23×4= 7×125+125
124+68+76= 263-53-47 19+199+1999 898+998 5×63×2=
951-395= 603+421= 798+321= 25×125×32= 540÷45÷2=
498-154-46= 29+（65+71） 45×37×2= （720÷45）÷2= 540÷36
999+99+2 48×125 198+196+8 725－76－24 75×19+75 2800÷25÷4
398+558+442 420÷35÷2 4×(25+50) (18+25)×4= 400-185-15=
250×48 125×13×8 125×56 65×299+65 40×209
15×2= 15×3= 15×4= 15×5= 15×6= 15×7= 15×8= 15×9=
25×2= 25×3= 25×4= 25×5= 25×6= 25×7= 25×8= 25×9=
125×2= 125×3= 125×4= 125×5= 125×6= 125×8=
35×2= 45×2= 55×2= 65×2= 75×2= 85×2= 95×2=
42×2= 21×2= 23×2= 24×2= 22×2= 27×2= 32×2= 26×2=
33×2= 36×2= 17×2= 18×2= 16×2= 12×2= 14×2= 13×2=
19×2= 12×5= 15×3= 15×30= 150×3= 150×30=
15×300= 3×150= 25×4= 45×20= 50×40= 250×4= 125×4=
21×40= 210×4= 60×90= 600×8= 60×50= 43×2= 20×34=
3×230= 12×40= 70×20= 3×900= 60×90= 12×7= 12×70=
120×70= 800×90= 40×200= 35×20= 25×20= 500×30=
18×5= 25×4= 350×20= 14×5= 140×50= 28×30=
30×20= 40×40= 140×20= 11×60= 13×30= 130×30=
50×40= 40×200= 50×600= 30×310= 70×8= 410×20=
20×10= 16×100= 200×70= 50×200= 32×30= 13×300=
40×800= 121×4= 60×900= 10×460= 120×3= 20×500=
70×20= 250×4= 120×50= 15×30= 25×30= 250×3=
150×40= 25×300= 30×150= 440×20= 50×800= 21×4=
25×40= 45×200= 70×40= 150×4= 125×8= 125×4=
210×4= 200×40= 310×3= 80×90= 600×7= 600×50=
43×20= 20×35= 3×210= 120×60= 700×20= 30×240=
15×2= 15×3= 15×4= 15×5= 15×6= 15×7= 15×8= 15×9=
25×2= 25×3= 25×4= 25×5= 25×6= 25×7= 25×8= 25×9=
125×2= 125×3= 125×4= 125×5= 125×6= 125×8=
35×2= 45×2= 55×2= 65×2= 75×2= 85×2= 95×2=
42×2= 21×2= 23×2= 24×2= 22×2= 27×2= 32×2= 26×2=
33×2= 36×2= 17×2= 18×2= 16×2= 12×2= 14×2= 13×2=
80÷2+100÷5= 45-20×3÷4= 240÷6-2×15= 52-36÷3+20=
320-200÷5×8= 140-20×5+25= 20×30+20×40= 25×(30+10)=
800÷40-400÷40= (840-400)÷4= 600÷(120÷60)= 60÷(10+120÷60)=
(600÷10+10)÷7= (26+14)×70= 260+14×(70-60)= (26+14)×(70-40)=
90÷(30×15÷50)= (35+45)÷(90-10)= 6×10-(21+29)= 25×(22+26×3)=
320-(120+25×4)= 80÷(32+8)×300= 3000-[(32+8)×30]= 30×[169-(60+9)]=
36÷3+6×2= 30÷(3+6×2)= 36÷[(3+6)×2]= 180÷(36÷12)+6=
180÷(36÷12+6)= 180÷[36÷(12+6)]= 450÷15+10×3= 450÷(15+10)×3=
450÷[(15+10)×2]= 240+180÷30×2= (40+180÷30)×2= (240+180)÷(30×2)=
36+360÷12= 800-800÷80×30= 800-(70×6+180)= 65×(40+20×3)=
题目在哪？
绛旓細15脳5= 23脳3= 12脳2脳5= 480梅80= 16脳5= 27脳3= 90梅15= 48梅4= 640梅16= 39梅3= 24脳20= 32脳3= 48梅16= 12脳8= 27脳3= 56梅14= 24梅8= 14脳2= 83锛45= 560梅80= 96梅24= 40梅20=
绛旓細17脳40锛680100锛63锛373.2锛1.68锛4.882.8脳0.4锛1.12 14锛7.4锛6.61.92梅0.04锛480.32脳500锛16065锛4.35锛69.35 10锛5.4锛4.64梅20锛0.23.5脳200锛7001.5锛0.06锛1.44 0.75梅15锛0.050.4脳0.8锛0.324脳0.25锛136锛1.54锛37.54 1.01脳99锛99.99420梅35锛...
绛旓細鍙ｇ畻锛2.7+6.3= 0.58+3.5= 6-2.2= 5.6-2.8= 25脳12= 鑴卞紡璁＄畻锛63+84脳2梅42 锛960锛400锛壝70 绔栧紡璁＄畻锛12.65+7.5= 83.6-4.35= 绠渚胯绠楋細99脳85+85 5.63+8.8+4.37+1.2 瑙ｅ喅闂锛氭潕澶т集4灏忔椂鍏辩粰820妫佃嫻鏋滄爲鍠蜂簡鑽按.鐓ц繖鏍疯绠,6灏忔椂鑳藉柗澶氬皯妫佃嫻鏋滄爲?
绛旓細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=澶熶簡鍚 鍙傝冭祫鏂: 400閬鍥涘勾绾у彛绠楅鐙傛毚璞嗕竵楂樼骇渚嶄粠 鍥涚骇鐨勫洖绛 宸茶禐杩 宸茶俯杩< 浣犲杩欎釜鍥炵瓟鐨勮瘎浠锋槸? 璇勮 鏀惰捣 ...
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 =...
绛旓細鍥涘勾绾у彛绠缁冧範(涔) 1) 79脳24= 2) 24脳4= 3) 400脳8= 4)26脳3= 5) 22脳5= 6)13脳8= 7) 60脳7= 8) 19脳4= 9) 90脳5= 10) 1000脳4= 11) 22脳7= 12) 24脳4= 13) 11脳8= 14)56+8= 15) 90脳9= 16) 16脳4= 17) 14脳8= 18) 22脳3= 19) 34脳3= 20) 56+8= ...
绛旓細鑳界粰鎴戝嚭500閬撳皬瀛鍥涘勾绾у彛绠楅鍟? 5 8涓洖绛 #鐑# 涓轰粈涔堢幇鍦ㄦ儏鏅枩鍓ц秺鏉ヨ秺灏戜簡? 濂ュ康 2010-08-23 路 TA鑾峰緱瓒呰繃267涓禐 鐭ラ亾绛斾富 鍥炵瓟閲:85 閲囩撼鐜:0% 甯姪鐨勪汉:57.6涓 鎴戜篃鍘荤瓟棰樿闂釜浜洪〉 鍏虫敞 灞曞紑鍏ㄩ儴 560梅35梅2= 25脳4= 254+99= 45脳12= 750-570= 50梅7= 57+19...
绛旓細鏆傛椂鍙湁500閬鍥涘勾绾у彛绠楅鐪熷涓嶈捣138-89= 5400梅54= 200脳34= 550-450= 18000梅600= 2700梅30= 45脳14= 180000+240000= 89梅100= 0.82+0.08= 73脳1= 0.63脳10= 4梅10= 17梅1000= 0.56+0.4= 80脳25= 1-0.93= 1.25脳100= 5.6+99= 100梅25= 90-0.9= 41脳100= 8800梅400= 0.12脳10=600梅...
绛旓細350+160=510 480+320+105=905 680-390=290 168+272=440 540+780=1320 498-236=262 780涓+120涓=900涓 19浜+16浜=35浜 800涓+4涓=804涓 59浜-25浜=34浜 90脳30=2700 160脳5=800 27脳20=540 650+320+80=1050 480梅4=120 36脳2=72 180脳2=360 24脳5=120 680脳0=0 60脳50...
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