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*25/100.25
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
68.64128*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
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×(1
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