综合初一上下学期的口算(195道题)附答案

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/11 00:12:29
综合初一上下学期的口算(195道题)附答案

综合初一上下学期的口算(195道题)附答案
综合初一上下学期的口算(195道题)附答案

综合初一上下学期的口算(195道题)附答案
17×40=680,100-63=37,3.2+1.68=4.88,2.8×0.4= 1.12
14-7.4=6.6,1.92÷0.04=48,0.32×500=160,0.65+4.35= 5
10-5.4=4.6,4÷20=0.2,3.5×200=700,1.5-0.06=1.44
0.75÷15=0.05,0.4×0.8=0.32,4×0.25=1,0.36+1.54=2
1.01×99=99.99,420÷35=12,25×12=300,135÷0.5=270
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÷17=0.03,32.8+19=51.8,5.2÷1.3=4,1.6×0.4= 0.64
4.9×0.7=3.43,1÷5=0.2,6÷12=0.5,0.87-0.49=0.38
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
13.1/2×3/5
14.3.375+5.75+2.25+6.625
15.1001-9036÷18
16.3.8×5.25+14.5
17.2.1*4.3+5.7*2.1
18.30×1/3
19.102*45-328
20.2/3×12
21.2.8*3.1+17.6/8
22.3/5×5/6
23.(50-12.5)/2.5
24.2/5×1/3
25.6110*47+639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7×1/5
29.3.375*0.97+0.97*6.625
30.25×4/5
31.6.54+2.4+3.46+0.6
32.5/6-1/2
33.95.6*1.8+95.6*8.2
34.1/2×1/5
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÷13×27
46.1.5×4.2-0.75÷0.25
47.3.27×4 +3.27×5.7
48.(1.2+ 1.8)×4.51025-768÷32
49.0.25×80-0.45÷0.9
50.1025-768÷32
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
没小数
123+25=148 123-35=88 56×7=392 135÷5=27
248+89=337 ...146-23=123 ...155×5=775 ...456-12=38...
456+45=501 ...546-457=89 ...45×10=451 ...564-12=47...
879+54=933 ...896-546=350 ...56×12=672.45-5=9...
457+456=913...
7+14=21 ...18-9=9...
8+16=24 ...25-5=20...
9+18=27...56-45=11...
10+20=30...45-23=22...
11+22=33...78-23=55...
12+24=36...
10-3=7
15-4=11
20-5=15
25-6=19
30-7=23
35-8=27
40-9=31
45-10=35
50-11=39
55-12=43
60-13=47
65-14=51
70-15=55
75-16=59
80-17=63
85-18=67
90-19=71
95-20=75
100-21=79
105-22=83
110-23=87
115-24=91
120-25=95
125-26=99
130-27=103
13+26=39...
14+28=42...
15+30=45...
16+32=48...
17+34=51...
18+36=54...
19+38=57...
20+40=60...
21+42=63...
22+44=66...
23+46=69...
24+48=72...
25+50=75...
26+52=78...
27+54=81...
28+56=84...
29+58=87...
30+60=90...
31+62=93...
32+64=96...
33+66=99...
5 ÷1 =5
10 ÷2 =5
15 ÷3 =5
20 ÷4 =5
25 ÷5 =5
30 ÷6 =5
35 ÷7 =5
40 ÷8 =5
45 ÷9 =5
50 ÷10 =5
55 ÷11 =5
60 ÷12 =5
65 ÷13 =5
70 ÷14 =5
75 ÷15 =5
80 ÷16 5
85 ÷17 5
90 ÷18 5
95 ÷19 5
100 ÷20 5
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
12÷3/5=12×( 5/3) 9÷6/7=9×( 7/6 ) 30÷5/6=30×(6/5 ) 4×(3/2 )=4÷2/3 ( 4 )÷5/7=4×7/5 3÷4/5=3×5/4 ( 24 )÷7/16=24×(16/7 ) A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7
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

15×0.4= 0.1×0.5= 2.8÷7=
100÷0.01= 1.4×3= 0.72÷8=
6÷0.03= 0.5×0.6= 40×0.9=
4÷0.5= 7×2.1= 8.89+0.1=
24×0.25= 0.1÷0.01= 2.4×0.8=
9×0.4= 10×0.01= 30.2-3.02=
4.3-0.25= 1-0.82=...

全部展开

15×0.4= 0.1×0.5= 2.8÷7=
100÷0.01= 1.4×3= 0.72÷8=
6÷0.03= 0.5×0.6= 40×0.9=
4÷0.5= 7×2.1= 8.89+0.1=
24×0.25= 0.1÷0.01= 2.4×0.8=
9×0.4= 10×0.01= 30.2-3.02=
4.3-0.25= 1-0.82= 9.6÷0.3=
2.6×0.01= 0×25.4= 4.8×0.4=
7.2+2.8= 78×100= 0÷150= 32÷0.4= 1300×300=
2.6×100= 150÷15= 32×0.4= 2600÷100=
32.8÷8= 1.64÷4= 300÷60= 18×700=
400÷80= 64÷4= 360÷20= 420÷70= 19×4= 540÷90= 74÷2= 360÷40=
270÷30= 540÷60= 57÷19= 70÷70=
400÷50= 350÷70= 810÷90= 430÷5=
6.6÷1.1= 7.6÷4= 1.54÷0.22= 4800÷200= 1.89÷0.63= 3600÷180= 128÷3.2= 110÷55=
32.8÷41= 750×0.5= 4.32÷0.8= 960÷12=
200÷40= 420÷30= 142÷71= 560÷80=
60×0.02= 660÷30= 480×0.8= 72÷4=
0.63÷21= 6400÷800= 0.05×20= 51÷1.7=
48÷16= 70÷35= 9.2÷2.3= 2.7×0.3=
1.5×0.4= 28×0.03= 0.38÷19= 0.68÷3.4=
40÷2= 650÷13= 980÷14= 680÷34=
720÷4= 800÷16= 720×0.5 230÷46=
600×0.03= 160÷40= 0.23×30= 50×1.2=
3300×30= 9600÷300= 4000÷500= 2500÷500=
1.4×300= 0.26×200= 0.50×90= 560÷70= 1500÷300= 0.05×200= 7200÷9= 0.18×20=
4.5×0×250= 0.69÷0.3×0.1= 0÷460×400= 6.8÷0.68×128=
7200÷9÷4= 960÷5÷6=
350×0.2×0.5= 12.5×8×4=
1×24+24= 5.6×2÷5.6=
8.4+1.6÷4= 6.3÷7×90=
(84+16)÷4= 50—35÷7=
420÷7+140= 39÷(24-11)=
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=
3.4-1.4= 7.82-7.2= 2.19+9.1=
10.1-0.89= 0.68+0.42= 8.1-5.1=
0.728-0.24= 0.8+0.18= 0.89-0.25=
1-0.98= 0.048+0.52= 5×400=
19.9+11.1= 187÷1000= 1+3.89=
0.081×10= 75÷10= 0.96÷0.8=
0.8×7= 1.5×7= 1.32×8=
0.7×8= 10.3×2= 5×0.6=
0.9×0.3= 3.5×0.2= 2.01×0=
10×0.05= 0.13×7= 0.21×100=
0.7×4= 0.05×4= 4×0.3=
12.5×8= 2.3×4= 3.25×0=
0.4×50= 30×0.1= 2.6×3=
4.1×2= 0.35×0.2= 7.5×0.1=
1-0.08= 3.5×0.01= 1.25÷0.25=
0×9.8= 3.9+0.39= 4.8+5.2=
0.5×0.4 = 4÷0.25= 3÷4=
8.1÷9= 2.5×4= 6-0.025=
3.6+6.3= 0.05×4= 3.5×0=
0÷3.5= 0.9×0.3= 1×0.06=
9×0.5= 1.25×8= 2.6×3=
4.1×2= 0.35×0.2= 7.5×0.1=
0.9×0.3= 1×0.06= 9×0.5=
1.25×8= 0.2×0.4= 8.2+1.8=
100-35.22= 2.5×0.4= 2.4×5=
0.22×4= 0.9-0.52= 3.99×1=
0×3.52= 2.5÷5= 8.4÷7=
0.34÷17= 2.5÷0.5= 8.4÷0.7=
0.34÷0.17= 30.4÷4= 1.2×6=
0.72÷0.6= 2.6÷1.3= 0.6×0.3=
0÷3.65= 7.82÷1 = 0.001÷0.1=
1.4÷0.7= 3.6÷0.06= 5.6÷0.9=
5.6÷1.4= 0.48÷0.8= 4.4÷0.11=
4.2×3 = 3.2×0.4= 0.3÷0.01=
4÷0.5= 5.1÷0.17= 0.28÷1.4=
0.9÷0.45= 9.6÷16= 1÷0.01 =
0.01÷1= 7.5÷1.5= 0.81÷9=
3÷0.5= 10÷25= 4.8÷0.16=
0÷3.89= 3.52÷1= 37.2×99+37.2=
6.4÷4= 1.5÷0.3= 1×0.4÷1×0.4=
1.8×5= 7.2÷0.9= 25×4÷0.25×4=
2.2×6= 8.4÷0.4= 9÷5-1.9÷5=
4.5÷0.9= 2.5×4= 25×3.3×0=
2.5×4= 0.3÷0.1= 37.2×99+37.2=
4.5×2= 7.8+0.22= 2-0.64-0.36=
3.4×0.4= 12.6-0.9= 2-1.64-0.36=
1.2÷0.04= 0.42÷7= 1.25×3.3×0=
0.9+2.01= 2.97÷100= 20-3.7-7.3=
6.3+7= 2.19+9.1= 5×0.75÷1.5×0.75=
65×0.2= 9.8-0.98= 1-0.1×0.1=
0.7+3= 1.2×0.8= 0.9×7+10.7=
6.3÷0.021= 1.5÷0.03= 6.8-2.4÷3=
5×0.7= 0.43×5= 3.6÷0.9-4=
3.6-0.36= 8.1-2.2= 0.6÷0.3+0.5=
6.8+8.6= 9.4×0.2= 1.8÷0.9×0.5=
2-1.08= 8.8÷0.4= (1.6+0.5)÷5=
43×0.01= 3.72×0.2= 0.7×8-0.6=
99+0.1= 3.2-2= 6×0.125×8=
1.9×4= 8.8÷0.11= 4×1.2×0.25=
0.125×8= 1.8×40= 2.5-3.6÷1.8=
2.3÷0.1= 8×5.1= 12-0.05×4=
4.2×3= 2.01÷3= 16-4.5-5.5=
1.8÷0.3= 3.72÷4= 13-0.5-4=
1.1×0.7= 2.32-0.4= 1.9+5.1÷51=
3.2×50= 3.2×0.5= 1×0.01÷0.1=
1.25÷0.5= 1.29÷3= 7.2-1.2+6.7=

收起

第一卷
一,口算题(10分)
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=

全部展开

第一卷
一,口算题(10分)
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=
二,填空题(16分,每空1分)
1.平行四边形的面积=( );字母公式:( )
2.2300平方厘米=( )平方米,5.4公顷=( )平方米
3.一个三角形的面积是24平方厘米,与它等底等高的平行四边形的面积是( )平方厘米.
4.m与3个n的和平均分10份,每一份是( ).
5.在3.5+7=10.5,10y+7,71-3x=4中等式有( ),方程有( ),含有未知数的式子有( ).
6.方程8x+15=95的解是( ).
7.长方形的周长是x,长为a,宽是( ),面积是( ).
8.(5+x)×b=( )×( )+( )×( )
三,判断题(正确的打"√",错误的打"×",10分)
1.方程都是等式,所以等式也都是方程.
( )
2.因为1.5÷0.5=3,所以1.5能被0.5整除.
( )
3.一个数乘以小数,积一定比这个数小.
( )
4.一个整数除以小数,商一定比这个整数大.
( )
5.一个数乘以0.05,表示求这个数的百分之五.
( )
6.平行四边形的面积比三角形的面积大.
( )
7.形状相同的两个梯形的面积相等.
( )
8.3×b+5可以写成3+5b.
( )
( )
10.比x少0.4的数,再扩大5倍,表示得数的式子为(x-0.4)×5.
( )
四,计算(24分)
1.计算下面各题,能用简便算法的用简便算法
(1)12.25-3.1+0.85-6.17
(2)(1.9-1.9×0.9)÷(3.8-2.8)
(3)2.65×1.7+1.35×1.7
(4)630÷[2.98+6.5×(3.2-3.12)]
2.解方程
(1)4x+3×0.7=6.5
(2)2(x-0.5)=1.6
(3)3x×2.34=4.914
(4)1.44÷x=0.4
8.26.84+34.6÷0.2×4
=26.84+34.6÷0.8
=26.84+43.25
=70.09
( )
四,计算下面各题,能用简便算法的用简便算法(8分,每题2分)
1.2.3+3.91÷(22-19.7)
2.13.7×0.25×8
3.(1-0.2)×[13-(3.12+5.28)]
4.2.65×1.7+1.35×1.70.6×1.2= 0.84÷0.6= 4.5×0.1=
15×0.4= 0.1×0.5= 2.8÷7=
100÷0.01= 1.4×3= 0.72÷8=
6÷0.03= 0.5×0.6= 40×0.9=
4÷0.5= 7×2.1= 8.89+0.1=
24×0.25= 0.1÷0.01= 2.4×0.8=
9×0.4= 10×0.01= 30.2-3.02=
4.3-0.25= 1-0.82= 9.6÷0.3=
2.6×0.01= 0×25.4= 4.8×0.4=
7.2+2.8= 78×100= 0÷150= 32÷0.4= 1300×300=
2.6×100= 150÷15= 32×0.4= 2600÷100=
32.8÷8= 1.64÷4= 300÷60= 18×700=
400÷80= 64÷4= 360÷20= 420÷70= 19×4= 540÷90= 74÷2= 360÷40=
270÷30= 540÷60= 57÷19= 70÷70=
400÷50= 350÷70= 810÷90= 430÷5=
6.6÷1.1= 7.6÷4= 1.54÷0.22= 4800÷200= 1.89÷0.63= 3600÷180= 128÷3.2= 110÷55=
32.8÷41= 750×0.5= 4.32÷0.8= 960÷12=
200÷40= 420÷30= 142÷71= 560÷80=
60×0.02= 660÷30= 480×0.8= 72÷4=
0.63÷21= 6400÷800= 0.05×20= 51÷1.7=
48÷16= 70÷35= 9.2÷2.3= 2.7×0.3=
1.5×0.4= 28×0.03= 0.38÷19= 0.68÷3.4=
40÷2= 650÷13= 980÷14= 680÷34=
720÷4= 800÷16= 720×0.5 230÷46=
600×0.03= 160÷40= 0.23×30= 50×1.2=
3300×30= 9600÷300= 4000÷500= 2500÷500=
1.4×300= 0.26×200= 0.50×90= 560÷70= 1500÷300= 0.05×200= 7200÷9= 0.18×20=
4.5×0×250= 0.69÷0.3×0.1= 0÷460×400= 6.8÷0.68×128=
7200÷9÷4= 960÷5÷6=
350×0.2×0.5= 12.5×8×4=
1×24+24= 5.6×2÷5.6=
8.4+1.6÷4= 6.3÷7×90=
(84+16)÷4= 50—35÷7=
420÷7+140= 39÷(24-11)=
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=
3.4-1.4= 7.82-7.2= 2.19+9.1=
10.1-0.89= 0.68+0.42= 8.1-5.1=
0.728-0.24= 0.8+0.18= 0.89-0.25=
1-0.98= 0.048+0.52= 5×400=
19.9+11.1= 187÷1000= 1+3.89=
0.081×10= 75÷10= 0.96÷0.8=
0.8×7= 1.5×7= 1.32×8=
0.7×8= 10.3×2= 5×0.6=
0.9×0.3= 3.5×0.2= 2.01×0=
10×0.05= 0.13×7= 0.21×100=
0.7×4= 0.05×4= 4×0.3=
12.5×8= 2.3×4= 3.25×0=
0.4×50= 30×0.1= 2.6×3=
4.1×2= 0.35×0.2= 7.5×0.1=
1-0.08= 3.5×0.01= 1.25÷0.25=
0×9.8= 3.9+0.39= 4.8+5.2=
0.5×0.4 = 4÷0.25= 3÷4=
8.1÷9= 2.5×4= 6-0.025=
3.6+6.3= 0.05×4= 3.5×0=
0÷3.5= 0.9×0.3= 1×0.06=
9×0.5= 1.25×8= 2.6×3=
4.1×2= 0.35×0.2= 7.5×0.1=
0.9×0.3= 1×0.06= 9×0.5=
1.25×8= 0.2×0.4= 8.2+1.8=
100-35.22= 2.5×0.4= 2.4×5=
0.22×4= 0.9-0.52= 3.99×1=
0×3.52= 2.5÷5= 8.4÷7=
0.34÷17= 2.5÷0.5= 8.4÷0.7=
0.34÷0.17= 30.4÷4= 1.2×6=
0.72÷0.6= 2.6÷1.3= 0.6×0.3=
0÷3.65= 7.82÷1 = 0.001÷0.1=
1.4÷0.7= 3.6÷0.06= 5.6÷0.9=
5.6÷1.4= 0.48÷0.8= 4.4÷0.11=
4.2×3 = 3.2×0.4= 0.3÷0.01=
4÷0.5= 5.1÷0.17= 0.28÷1.4=
0.9÷0.45= 9.6÷16= 1÷0.01 =
0.01÷1= 7.5÷1.5= 0.81÷9=
3÷0.5= 10÷25= 4.8÷0.16=
0÷3.89= 3.52÷1= 37.2×99+37.2=
6.4÷4= 1.5÷0.3= 1×0.4÷1×0.4=
1.8×5= 7.2÷0.9= 25×4÷0.25×4=
2.2×6= 8.4÷0.4= 9÷5-1.9÷5=
4.5÷0.9= 2.5×4= 25×3.3×0=
2.5×4= 0.3÷0.1= 37.2×99+37.2=
4.5×2= 7.8+0.22= 2-0.64-0.36=
3.4×0.4= 12.6-0.9= 2-1.64-0.36=
1.2÷0.04= 0.42÷7= 1.25×3.3×0=
0.9+2.01= 2.97÷100= 20-3.7-7.3=
6.3+7= 2.19+9.1= 5×0.75÷1.5×0.75=
65×0.2= 9.8-0.98= 1-0.1×0.1=
0.7+3= 1.2×0.8= 0.9×7+10.7=
6.3÷0.021= 1.5÷0.03= 6.8-2.4÷3=
5×0.7= 0.43×5= 3.6÷0.9-4=
3.6-0.36= 8.1-2.2= 0.6÷0.3+0.5=
6.8+8.6= 9.4×0.2= 1.8÷0.9×0.5=
2-1.08= 8.8÷0.4= (1.6+0.5)÷5=
43×0.01= 3.72×0.2= 0.7×8-0.6=
99+0.1= 3.2-2= 6×0.125×8=
1.9×4= 8.8÷0.11= 4×1.2×0.25=
0.125×8= 1.8×40= 2.5-3.6÷1.8=
2.3÷0.1= 8×5.1= 12-0.05×4=
4.2×3= 2.01÷3= 16-4.5-5.5=
1.8÷0.3= 3.72÷4= 13-0.5-4=
1.1×0.7= 2.32-0.4= 1.9+5.1÷51=
3.2×50= 3.2×0.5= 1×0.01÷0.1=
1.25÷0.5= 1.29÷3= 7.2-1.2+6.7=

收起